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  • 1
    Online Resource
    Online Resource
    Cambridge :Cambridge University Press,
    Keywords: Brain -- Anatomy. ; Neuropsychology. ; Electronic books.
    Description / Table of Contents: This book is an introduction to neuroanatomy from a behavioural perspective. Now in its third edition, this highly successful text has been extensively revised to include new areas of fMRI research. This is essential reading for psychiatrists, neuropsychiatrists, neurologists, psychologists and neuroscientists.
    Type of Medium: Online Resource
    Pages: 1 online resource (256 pages)
    Edition: 3rd ed.
    ISBN: 9780511773631
    DDC: 612.8/2
    Language: English
    Note: Cover -- Half-title -- Title -- Copyright -- Contents -- Preface to the second edition -- References -- Preface to the third edition -- Chapter 1 Introduction -- Major subdivisions -- Common terms -- Ventricular system -- References -- Chapter 2 Gross anatomy of the brain -- Introduction -- Brainstem -- Medulla -- Pons -- Midbrain -- Cerebellum -- Cerebrum -- Vasculature -- Electroencephalogram -- Meninges -- Sexual dimorphism and aging -- References -- Chapter 3 Histology -- Introduction -- The neuron -- Neuron cell membrane -- Dendrites -- Axon -- Synapse -- Receptors and receptor mechanisms -- Neurotransmitter removal -- Neurotransmitters -- Acetylcholine -- Glutamate -- gamma-Aminobutyric acid -- Glycine -- Norepinephrine -- Dopamine -- Serotonin (5-hydroxytryptamine) -- Histamine -- Adenosine -- Neuroactive peptide neurotransmitters -- Excitotoxicity -- Neuroglia -- Oligodendroglial cell -- Astrocyte -- Microglia -- Other proteins -- Cadherins -- Cytokines -- Select bibliography -- References -- Chapter 4 Occipital and parietal lobes -- Occipital lobe -- Functional anatomy -- Prary visual cortex (BA 17 -- V1 -- striate cortex) -- Secondary and tertiary visual cortex (BA 18 and BA 19) -- Parallel visual pathways -- Behavioral considerations -- Schizophrenia -- Hallucinations -- Visual agnosia -- Blindsight -- Anxiety disorder -- Charles Bonnet syndrome -- Other behavioral considerations -- Parietal lobe -- Functional anatomy -- Primary somatosensory cortex (SI) -- Secondary somatosensory cortex (SII) and the parietal operculum -- Superior parietal lobule -- Precuneus -- Consciousness -- Body movements in space -- Episodic memory retrieval -- Self-awareness -- Intraparietal sulcus -- Lateral intraparietal area (parietal saccade region) -- Medial intraparietal area (parietal reach region). , Anterior intraparietal area (parietal reach and grasp region) -- Ventral intraparietal area (navigation in space) -- Posterior intraparietal area (three-dimensional analysis) -- Inferior parietal lobule -- Behavioral considerations -- Schizophrenia -- Attention -- Spatial neglect -- Optic ataxia -- Apraxia -- Gerstmann syndrome -- Balint syndrome -- Other considerations -- Select bibliography -- References -- Chapter 5 Temporal lobe: Neocortical structures -- Functional anatomy -- Auditory areas -- Heschl's gyrus (primary auditory area -- BA 41) -- Auditory association area (BA 42) -- Planum temporale -- Superior temporal gyrus and superior temporal sulcus -- Temporal association areas -- Fusiform gyrus and fusiform face area -- Temporal pole and theory-of-mind -- Temporoparietal junction and the social brain -- Insula -- Anterior insula -- Posterior insula -- Behavioral considerations -- Schizophrenia -- Depression -- Reduplicative paramnesia -- Seizures -- Receptive aphasia -- Autoscopic phenomena -- Autism -- Dyslexia -- Prosopagnosia -- Stuttering -- Other behavioral considerations -- Select bibliography -- References -- Chapter 6 Frontal lobe -- Introduction -- Subdivisions of the frontal lobe -- Motor cortex -- Primary motor cortex -- Premotor cortex -- Mirror neurons -- Supplementary motor area and supplementary motor complex -- Frontal eye field -- Saccade eye movements -- Saccade eye movements -- Broca's speech area -- Prefrontal cortex -- Dorsolateral prefrontal cortex -- Ventrolateral prefrontal cortex -- Orbitofrontal cortex -- Medial prefrontal cortex, default brain network, and the social brain -- Dorsomedial prefrontal cortex -- Ventromedial prefrontal cortex -- Prefrontal networks -- Behavioral considerations -- Other behavioral considerations -- Schizophrenia -- Depression -- Bipolar disorder -- Obsessive-compulsive disorder. , Posttraumatic stress disorder -- Borderline personality disorder -- Autism spectrum disorders -- Frontotemporal dementia -- Seizures -- Miscellaneous conditions -- Select bibliography -- References -- Chapter 7 Basal ganglia -- Introduction -- Dorsal striatopallidum and associated nuclei -- Neostriatum (dorsal striatum) -- Dorsal pallidum (paleostriatum) -- Subthalamic nucleus (subthalamus) -- Substantia nigra -- Connections of the dorsal striatopallidal system (skeletomotor circuit) -- Parallel circuits -- Skeletomotor circuit -- Direct pathway -- Indirect pathway -- Oculomotor circuit -- Association circuit -- Ventral striatopallidum and -- Ventral striatum (limbic striatum) -- Nucleus accumbens -- Ventral pallidum -- Basal nucleus (of Meynert) -- Ventral tegmental area -- Pedunculopontine tegmental nucleus -- Connections of the ventral striatopallidal system (limbic circuit) -- Deep brain stimulation -- Behavioral considerations -- Obsessive-compulsive disorder (OCD) -- Tourette syndrome -- Hyperkinetic movement disorders -- Hypokinetic movement disorders -- Huntington disease -- Other behavioral considerations -- Select bibliography -- References -- Chapter 8 Diencephalon: Hypothalamus and epithalamus -- Hypothalamus -- Anatomy and behavioral considerations -- Preoptic hypothalamic area -- Periventricular hypothalamic zone -- Medial hypothalamic zone -- Supraoptic region -- Tuberal region -- Lateral hypothalamic zone and medial forebrain bundle -- Connections of the hypothalamus -- Inputs -- Outputs -- Other behavioral considerations -- Epithalamus -- Pineal (epiphysis) -- Habenula -- Lateral habenular nucleus -- Medial habenular nucleus -- Select bibliography -- References -- Chapter 9 Diencephalon: Thalamus -- Introduction -- Anatomy and behavioral considerations -- Thalamic nuclei -- Anterior thalamic nuclei -- Midline and medial nuclei. , Ventral thalamic nuclei -- Lateral thalamic nuclei -- Medial and lateral geniculate bodies -- Reticular nucleus -- Intralaminar nuclei -- Limbic thalamus -- Other behavioral considerations -- Select bibliography -- References -- Chapter 10 Brainstem -- Introduction -- Anatomy and behavioral considerations -- Reticular formation -- Parabrachial nucleus -- Raphe nuclei -- Periaqueductal gray -- Locus ceruleus and lateral tegmental nucleus -- Inferior olive -- Select bibliography -- References -- Chapter 11 Limbic system: Temporal lobe -- Anatomy -- Hippocampal formation -- Amygdala -- Lateral (basolateral) nuclei -- Medial nuclei -- Central nucleus -- Uncus -- Functional and behavioral considerations -- Neurogenesis -- Schizophrenia -- Depression/bipolar disorder -- Posttraumatic stress disorder -- Borderline personality disorder -- Autism -- Panic disorder -- Select bibliography -- References -- Chapter 12 Limbic system: Cingulate cortex -- Introduction -- Anatomy and behavioral considerations -- Anterior cingulate cortex -- Pregenual anterior cingulate cortex -- Subgenual anterior cingulate cortex -- Midcingulate cortex -- Posterior cingulate cortex -- Retrosplenial cortex (RSC) -- Cingulum -- Nociception (pain) -- Social interactions -- Connections of the cingulate cortex -- Behavioral disorders and neurosurgery -- Schizophrenia -- Depression and bipolar disorder -- Obsessive-compulsive disorder -- Posttraumatic stress disorder -- Akinetic mutism -- Tourette syndrome -- Cingulate cortex seizures -- Select bibliography -- References -- Chapter 13 Limbic system: Overview -- Introduction -- Anatomy -- Olfactory structures -- Hippocampal formation and related structures -- Parahippocampal gyrus -- Hippocampal formation -- Septal nuclei and nucleus accumbens -- Amygdala -- Behavioral considerations -- Hippocampal formation and related structures. , Septal nuclei and nucleus accumbens -- Amygdala and related structures -- Other behavioral considerations -- Kluver-Bucy syndrome -- Temporal lobe epilepsy -- Other behavioral considerations -- Select bibliography -- References -- Chapter 14 Interhemispheric connections and laterality -- Introduction -- Interhemispheric communication -- Corpus callosum -- Anterior commissure -- Hippocampal commissure -- Supraoptic commissure -- Habenular commissure -- Posterior commissure -- Hemispheric specialization -- Left hemisphere -- Right hemisphere -- Lobular specializations -- Occipitoparietal lobe -- Temporal lobe -- Frontal lobe -- Subcortical regions -- Select bibliography -- References -- Index.
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  • 2
    Online Resource
    Online Resource
    Cambridge :Cambridge University Press,
    Keywords: Brain -- Anatomy. ; Electronic books.
    Description / Table of Contents: This new edition of The Brain and Behavior retains the core aim of the previous successful edition, and provides an accessible introduction to behavioral neuroanatomy. The text is presented in a highly structured and organised format to help distinguish between issues of anatomical, behavioural and physiological relevance.
    Type of Medium: Online Resource
    Pages: 1 online resource (283 pages)
    Edition: 2nd ed.
    ISBN: 9780511200571
    DDC: 612.8/2
    Language: English
    Note: Cover -- Half-title -- Title -- Copyright -- Dedication -- Contents -- Preface -- References -- 1 Introduction -- Major subdivisions -- Common terms -- The ventricular system -- Clinical vignette -- References -- 2 Gross anatomy of the brain -- Brainstem -- Medulla -- Pons -- Midbrain -- Clinical vignette -- Cerebellum -- Cerebrum -- Vasculature -- Electroencephalogram -- Meninges -- References -- 3 Histology -- Anatomy and behavioral considerations -- The neuron -- Axon -- Dendrites -- Neuron cell membrane -- Synapse -- Receptors and receptor mechanisms -- Neurotransmitter removal -- Neurotransmitters -- Amino acid neurotransmitters -- Monoaminergic neurotransmitters -- Acetylcholine -- Biogenic amines (catecholamines) -- Dopamine -- Norepinephrine and epinephrine -- Serotonin -- Neuroactive peptide neurotransmitters -- Neuroglia -- Myelin -- Astrocytes -- Microglia -- Select bibliography -- References -- 4 Occipital and parietal lobes -- Occipital lobe -- Anatomy and behavioral considerations -- Primary visual cortex (BA 17) -- Secondary and tertiary visual cortex (BA 18 and 19) -- Parietal lobe -- Anatomy and behavioral considerations -- Primary somesthetic cortex -- Superior parietal lobule -- Inferior parietal lobule -- Other symptoms -- Select bibliography -- References -- 5 Temporal lobe - neocortical structures -- Anatomy and behavioral considerations -- Clinical vignette -- Clinical vignette -- Superior and middle temporal gyrus -- Auditory cortex -- Temporal association areas -- Clinical vignette -- Clinical vignette -- Inferior temporal and fusiform gyrus -- Clinical vignette -- Further behavioral considerations -- The insula -- Select bibliography -- References -- 6 Frontal lobe -- Anatomical subdivisions -- Motor cortex -- Primary motor cortex -- Premotor cortex -- Clinical vignette -- Supplementary motor area -- Clinical vignette. , Clinical vignette -- Frontal eye fields -- Broca's speech area -- Prefrontal cortex -- Orbital prefrontal cortex -- Clinical vignette -- Clinical vignette -- The ventromedial prefrontal cortex (VMPC) -- Clinical vignette -- Dorsomedial prefrontal cortex -- Dorsolateral prefrontal cortex -- Neurotransmitters in the prefrontal cortex -- Select bibliography -- References -- 7 Basal ganglia -- Anatomy and behavioral considerations -- Dorsal striatopallidum and associated nuclei -- Dorsal striatum (neostriatum) -- Huntington's disease -- Obsessive-compulsive disorder -- Tourette's syndrome -- Other -- Dorsal pallidum (paleostriatum) -- Subthalamic nucleus (subthalamus) -- Substantia nigra -- Connections of the dorsal striatopallidal system (skeletomotor circuit) -- Parallel circuits -- Skeletomotor circuit -- Direct pathway -- Indirect pathway -- Oculomotor circuit -- Association circuit -- Hyperkinetic movement disorders -- Hypokinetic movement disorders -- Ventral striatopallidum and associated nuclei -- Nucleus accumbens -- Basal nucleus (of Meynert) -- Ventral tegmental area -- Pedunculopontine tegmental nucleus -- Connections of the ventral striatopallidal system (limbic circuit) -- Further behavioral notes -- Select bibliography -- References -- 8 Diencephalon: hypothalamus and epithalamus -- Hypothalamus -- Anatomical and behavioral considerations -- Preoptic hypothalamic area -- The periventricular hypothalamic zone -- The medial hypothalamic zone -- Supraoptic region -- Tuberal region -- Clinical vignette -- Lateral hypothalamic zone and medial forebrain bundle -- Connections of the hypothalamus -- Incoming -- Clinical vignette -- Outgoing -- Further behavioral considerations -- Clinical vignette -- Epithalamus -- Pineal (epiphysis) -- Habenula -- Lateral habenular nucleus -- Medial habenular nucleus -- Select bibliography -- References. , 9 Diencephalon: thalamus -- Anatomy and behavioral considerations -- Thalamic nuclei -- Anterior thalamic nuclei -- Midline and medial nuclei -- Ventral thalamic nuclei -- Clinical vignette -- Lateral thalamic nuclei -- Medial and lateral geniculate bodies -- Reticular nucleus -- Intralaminar nuclei -- Limbic thalamus -- Further behavioral considerations -- Select bibliography -- References -- 10 Brainstem -- Anatomy and behavioral considerations -- Reticular formation -- Parabrachial nucleus -- Clinical vignette -- Raphe nuclei -- Clinical vignette -- Periaqueductal gray -- Locus ceruleus and lateral tegmental nucleus -- Select bibliography -- References -- 11 Limbic system: temporal lobe -- Hippocampal formation -- Clinical vignette -- Clinical vignette -- Clinical vignette -- Amygdala -- Lateral nuclei -- Medial nuclei -- Central nucleus -- Functional and behavioral considerations -- Clinical vignette -- Uncus -- Schizophrenia -- Panic disorder -- Select bibliography -- References -- 12 Limbic system: cingulate cortex -- Anatomy and behavioral considerations -- Anterior cingulate cortex -- Visceromotor control -- Skeletomotor control -- Nociception (pain) -- Social interactions -- Memory -- Clinical vignette -- Case 1 -- Case 2 -- Case 3 -- Posterior cingulate cortex -- Connections of the cingulate cortex -- Behavioral disorders and neurosurgery -- Akinetic mutism -- Gilles de la Tourette syndrome (GTS) -- Obsessive-compulsive disorder -- Schizophrenia -- Depression -- Cingulate cortex seizures -- Select bibliography -- References -- 13 Limbic system: overview -- Anatomy -- Olfactory structures -- The hippocampal formation and related structures -- The parahippocampal gyrus -- The hippocampal formation -- Case 1 -- Case 2 -- Amygdaloid nuclear complex -- Behavioral considerations -- Hippocampal formation and related structures. , Septal nuclei and nucleus accumbens -- Amygdala and related structures -- Further behavioral considerations -- Kluver-Bucy syndrome -- Temporal lobe epilepsy -- Other considerations -- Select bibliography -- References -- 14 Interhemispheric connections and laterality -- Interhemispheric communication -- Corpus callosum -- Anterior commissure -- Hippocampal commissure -- Supraoptic commissure -- Habenular commissure -- Posterior commissure -- Hemispheric specialization -- Left hemisphere -- Right hemisphere -- Lobular specializations -- Occipitoparietal lobe -- Temporal lobe -- Frontal lobe -- Subcortical regions -- Select bibliography -- References -- Index.
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  • 3
    Type of Medium: Book
    Pages: VI, 57 S. , Ill., graph. Darst., Kt. , 8 Kt.-Beil.
    ISBN: 0813721814
    Series Statement: Special papers / the Geological Society of America 181
    DDC: 551.46/083325
    Language: English
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  • 4
    Keywords: Philosophy, Modern 19th century. ; Literature Philosophy. ; Criticism. ; Philosophy, Modern 19th century ; Literature Philosophy ; Criticism ; Philosophy, Modern 19th century ; Literature Philosophy ; Criticism ; Literature Philosophy ; Philosophy, Modern 19th century ; Philosophy, Modern 19th century. ; Literature Philosophy. ; Criticism. ; Literature ; Philosophy ; Philosophy, Modern ; Bellettrie ; Filosofie ; Poststructuralisme ; Philosophy & Religion ; Philosophy ; PHILOSOPHY ; History & Surveys ; Modern ; Criticism ; Electronic books. ; Electronic books. ; Electronic books
    Description / Table of Contents: Speculations: Idealism and its Rem(a)inders / Tilottama Rajan and David L. Clark -- Fictions of Authority: Kierkegaard, de Man, and the Ethics of Reading / Christopher Norris -- Mimesis and the End of Art / John Sallis -- "The Necessary Heritage of Darkness": Tropics of Negativity in Schelling, Derrida, and de Man / David L. Clark -- Language, Music, and the Body: Nietzsche and Deconstruction / Tilottama Rajan -- Stubborn Attachment, Bodily Subjection: Rereading Hegel on the Unhappy Consciousness / Judith Butler -- The Ring of Being: Nietzsche, Freud, and the History of Conscience / Ned Lukacher -- Immediacy and Dissolution: Notes on the Languages of Moral Agency and Critical Discourse / Thomas Pfau -- "Non-Identity": The German Romantics, Schelling and Adorno / Andrew Bowie -- Complementarity, History, and the Unconscious / Arkady Plotnitsky -- Reconstructing Aesthetic Education: Modernity, Postmodernity, and Romantic Historicism / Eric Meyer.
    Type of Medium: Online Resource
    Pages: vii, 386 p , 23 cm
    Edition: Boulder, Colo NetLibrary 1999 Online-Ressource E-Books von NetLibrary
    ISBN: 0585045410 , 9780585045412
    Series Statement: SUNY series, the margins of literature
    Language: English
    Note: Includes bibliographical references and index , Electronic reproduction, Boulder, Colo : NetLibrary, 1999
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  • 5
    Book
    Book
    Boulder, Colo. : The Geological Soc. of America [u.a.]
    Keywords: Conodonten
    Type of Medium: Book
    Pages: XXVIII, 202 Seiten , Ill., graph. Darst.
    ISBN: 0813730287
    Series Statement: Treatise on invertebrate paleontology / Founder: Raymond C. Moore. Prepared under the sponsorship of The Geological Society of America, Inc., The Paleontological Society ... Suppl. 2
    Language: English
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  • 6
    Unknown
    Albany : State University of New York Press
    SUNY series, the margins of literature  
    Keywords: Criticism. ; Literature, Philosophy. ; Philosophy, Modern, 19th century.
    Pages: vii, 386 p.
    ISBN: 0-585-04541-0
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  • 7
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    PANGAEA
    In:  Supplement to: Kitchell, Jennifer A; Clark, David L (1982): Late Cretaceous-Paleogene paleogeography and paleocirculation: evidence of north polar upwelling. Palaeogeography, Palaeoclimatology, Palaeoecology, 40(1-3), 135-165, https://doi.org/10.1016/0031-0182(82)90087-6
    Publication Date: 2023-06-27
    Description: Quantitative determination of biogenic silica in Late Cretaceous and Paleogene deep-sea sediment cores from the central Arctic Ocean provides evidence of open-ocean polar upwelling. The timing of polar upwelling coincides with periods of a weakened meridional thermal gradient, suggesting that heat transport to the poles by oceanic circulation may have been important. The timing of biogenic silica deposition in the Arctic precedes its deposition in both the Norwegian-Greenland Sea of the North Atlantic and the Bering Sea of the North Pacific. Tectonic events may be responsible for the timing and siting of sites of deposition of biogenic silica in high northern latitudes, particularly the tectonic evolution of sites of deep-water exchange between the Arctic and the world ocean. We outline three phases in the post-mid-Cretaceous history of silica deposition in high northern latitudes. During Phase I, the Arctic is a silica sink, with deep-water formation but with no deep-water outflow. The transition to Phase II is brought about by opening of the Svalbard-Greenland Strait to deep-water outflow from the Arctic to the Norwegian-Greenland Sea. The transition to Phase III is initiated by submergence of the Faroe-Iceland Ridge and deep-water outflow from the Arctic to the North Atlantic. Climatic conditions in the Arctic during Late Cretaceous and Paleogene time are predicted to have favored open-ocean upwelling due to a circulation pattern dominated by cyclonic conditions, resulting from the establishment of a semi-permanent atmospheric low over the Alpha Ridge. Bathymetry of the Alpha Ridge may have intensified paleo-upwelling.
    Keywords: 54-422; 56-437; Aluminium; Atomic absorption spectrometry (AAS); Calculated; Deep Sea Drilling Project; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP; Elevation of event; Event label; Glomar Challenger; Latitude of event; Leg54; Leg56; Longitude of event; Magnesium; North Pacific; North Pacific/RIDGE; Opal, biogenic silica; Silicon; Silicon dioxide
    Type: Dataset
    Format: text/tab-separated-values, 28 data points
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  • 8
    Publication Date: 2023-08-28
    Keywords: Alpha Ridge, Arctic Ocean; CAMECA SX50 electron microprobe; Cerium; CESAR; CESAR_83-011; DEPTH, sediment/rock; Dysprosium; Erbium; Europium; Event label; FL-275; FL-286; FL-380; FL-443; Gadolinium; GC; Gravity corer; Identification; Iron; Manganese; Mass spectrometer VG Sector 54; Neodymium; Rubidium; Rubidium-87/Strontium-86 ratio; Samarium; Sampling/drilling from ice; Sampling/drilling ice; Strontium; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, error; T-3; Ytterbium
    Type: Dataset
    Format: text/tab-separated-values, 222 data points
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  • 9
    Publication Date: 2023-08-28
    Keywords: Alpha Ridge, Arctic Ocean; Aluminium oxide; Aluminium oxide, standard deviation; Calcium oxide; Calcium oxide, standard deviation; CESAR; CESAR_83-011; Cobalt; Cobalt, standard deviation; Copper; Copper, standard deviation; DEPTH, sediment/rock; Description; Electron microprobe (EMP); Event label; FL-286; GC; Geologic age name; Gravity corer; Identification; Iron; Iron, standard deviation; Magnesium oxide; Magnesium oxide, standard deviation; Manganese; Manganese, standard deviation; Nickel; Nickel, standard deviation; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Number; Potassium oxide; Potassium oxide, standard deviation; Sampling/drilling from ice; Sampling/drilling ice; Silicon dioxide; Silicon dioxide, standard deviation; T-3; Zinc; Zinc, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1003 data points
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  • 10
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Winter, Bryce L; Johnson, Clark M; Clark, David L (1997): Geochemical constraints on the formation of Late Cenozoic ferromanganese micronodules from the central Arctic Ocean. Marine Geology, 138(1-2), 149-169, https://doi.org/10.1016/S0025-3227(97)00013-3
    Publication Date: 2023-08-28
    Description: In order to determine geochemical compositions of Late Cenozoic Arctic seawater, oxide fractions were chemically separated from 15 samples of hand-picked ferromanganese micronodules (50-300 mu m). The success of the chemical separation is indicated by the fact that 〉97% of the Sr in the oxide fraction is seawater-derived. Rare-earth element (REE) abundances of the Arctic micronodule oxide fractions are much lower than those of bulk Fe-Mn nodules from other ocean basins of the world (e.g., 33 vs. 145 ppm Nd), but the Arctic oxides are enriched in Ce relative to Nd (Ce-N/Nd-N=2.2+/-0.5) and have convex-upward, shale-normalized REE patterns (Nd-N/Gd-N=0.61+/-0.06, Gd-N/Yb-N = 1.5+/-0.2, Nd-N/Yb-N = 0.9+/-0.2), typical of other hydrogenous and diagenetic marine Fe-Mn-oxides. Bulk sediment samples from the central Arctic Ocean have REE abundances and patterns that are characteristic of those of post-Archean shale. Non-detrital fractions (calcite + oxide coatings) of Recent Arctic foraminifera have REE abundances and patterns similar to those of Recent foraminifera from the Atlantic Ocean. Electron microprobe analyses (n=178) of transition elements in 29 Arctic Fe-Mn micronodules from five different stratigraphic intervals of Late Cenozoic sediment indicate that oxide accretion occurred as a result of hydrogenetic and diagenetic processes close to the sediment-seawater interface. Transition element ratios suggest that no oxide accretion occurred during transitions from oxic to suboxic diagenetic conditions. Only K is correlated with Si and Al, and ratios of these elements suggest that they are associated with illite or phillipsite. Ca and Mg are correlated with Mn, which indicates variable substitution of these elements from seawater into the manganate phase. The geochemical characteristics of Arctic Fe-Mn micronodules indicate that the REEs of the oxide fractions were ultimately derived from seawater. However, because of minute contributions of Sr from siliciclastic detritus during diagenesis or during the chemical leaching procedure, Sr isotope compositions of the oxide fractions cannot be used to trace temporal changes in the Sr-87/Sr-86 ratio of Arctic seawater or to improve the chronostratigraphy.
    Keywords: Alpha Ridge, Arctic Ocean; CESAR; CESAR_83-011; FL-275; FL-286; FL-380; FL-443; GC; Gravity corer; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Sampling/drilling from ice; Sampling/drilling ice; T-3
    Type: Dataset
    Format: application/zip, 4 datasets
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