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  • 1
    Online Resource
    Online Resource
    Synorogenic extension: Quantitative constraints on the age and displacement of the Zanskar shear zone (northwest Himalaya)
    Geological Society of America ; 1999
    In:  Geological Society of America Bulletin Vol. 111, No. 3 ( 1999-3), p. 364-374
    Details
    In: Geological Society of America Bulletin, Geological Society of America, Vol. 111, No. 3 ( 1999-3), p. 364-374
    Type of Medium: Online Resource
    ISSN: 0016-7606
    URL: Article
    URL: Article
    DOI: 10.1130/0016-7606(1999)111〈0364:SEQCOT〉2.3.CO;2
    DOI: 10.1130/9920
    Language: Unknown
    Publisher: Geological Society of America
    Publication Date: 1999
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    detail.hit.zdb_id: 2008165-0
    detail.hit.zdb_id: 449720-X
    detail.hit.zdb_id: 1351-1
    SSG: 13
    Location Call Number Limitation Availability
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    Online Resource
  • 2
    Online Resource
    Online Resource
    North Pacific Ocean CO 2 disequilibrium for spring through summer, 1985–1989
    American Geophysical Union (AGU) ; 1996
    In:  Journal of Geophysical Research: Oceans Vol. 101, No. C12 ( 1996-12-15), p. 28539-28555
    Details
    In: Journal of Geophysical Research: Oceans, American Geophysical Union (AGU), Vol. 101, No. C12 ( 1996-12-15), p. 28539-28555
    Abstract: Extensive measurements of CO 2 fugacity in the North Pacific surface ocean and overlying atmosphere during the years 1985–1989 are synthesized and interpreted to yield a basin‐wide estimate of ΔfCO 2 . The observations, taken from February through early September, suggest that the subtropical and subarctic North Pacific is a small sink for atmospheric CO 2 (0.07 to 0.2 Gton C (half year) −1 for the region north of 15°N). Objective analysis techniques are used to estimate uncertainty fields resulting from constructing basin‐wide contours of oceanic fCO 2 on the basis of individual cruise transects. The uncertainties are significant and imply that future sampling programs need to recognize that estimating oceanic uptake of anthropogenic CO 2 from ship‐transect observations of oceanic fCO 2 alone will require very extensive sampling.
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/96JC02100
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 1996
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    detail.hit.zdb_id: 3094104-0
    detail.hit.zdb_id: 2130824-X
    detail.hit.zdb_id: 2016813-5
    detail.hit.zdb_id: 2016810-X
    detail.hit.zdb_id: 2403298-0
    detail.hit.zdb_id: 2016800-7
    detail.hit.zdb_id: 161666-3
    detail.hit.zdb_id: 161667-5
    detail.hit.zdb_id: 2969341-X
    detail.hit.zdb_id: 161665-1
    detail.hit.zdb_id: 3094268-8
    detail.hit.zdb_id: 710256-2
    detail.hit.zdb_id: 2016804-4
    detail.hit.zdb_id: 3094181-7
    detail.hit.zdb_id: 3094219-6
    detail.hit.zdb_id: 3094167-2
    detail.hit.zdb_id: 2220777-6
    detail.hit.zdb_id: 3094197-0
    SSG: 16,13
    Location Call Number Limitation Availability
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  • 3
    Online Resource
    Online Resource
    Staircase 40/Ar39Ar spectra of fine-grained white mica: Timing and duration of deformation and empirical constraints on argon diffusion
    Geological Society of America ; 1996
    In:  Geology Vol. 24, No. 8 ( 1996), p. 747-
    Details
    In: Geology, Geological Society of America, Vol. 24, No. 8 ( 1996), p. 747-
    Type of Medium: Online Resource
    ISSN: 0091-7613
    URL: Article
    URL: Article
    DOI: 10.1130/0091-7613(1996)024〈0747:SAASOF〉2.3.CO;2
    DOI: 10.1130/9641
    Language: English
    Publisher: Geological Society of America
    Publication Date: 1996
    detail.hit.zdb_id: 184929-3
    detail.hit.zdb_id: 2041152-2
    SSG: 13
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    Online Resource
  • 4
    Online Resource
    Online Resource
    Alpine deformation and 40 Ar/ 39 Ar geochronology of synkinematic white mica in the Siviez‐Mischabel Nappe, western Pennine Alps, Switzerland
    American Geophysical Union (AGU) ; 1998
    In:  Tectonics Vol. 17, No. 3 ( 1998-06), p. 407-425
    Details
    In: Tectonics, American Geophysical Union (AGU), Vol. 17, No. 3 ( 1998-06), p. 407-425
    Abstract: We explore the timing of deformation and exhumation of the Siviez‐Mischabel Nappe (western Swiss Alps), which has been considered a classic example of a midcrustal crystalline nappe since the studies of Argand [1916]. This study presents 40 Ar/ 39 Ar ages obtained on both synkinematic white mica from Permo‐Triassic cover sediments and more complex white mica populations from basement gneisses of the Siviez‐Mischabel and middle Pennine Nappes. Primary foliation developed in cover units by nucleation, growth, and rigid rotation of mica grains during noncoaxial Alpine deformation. Although some samples show a crenulation of this primary foliation, mica growth appears to have occurred only during the development of primary foliation, the main phase of greenschist facies deformation related to imbrication of the Siviez‐Mischabel Nappe and other middle Pennine Nappes. Good agreement exists between independent estimates of the timing of deformation and reported 40 Ar/ 39 Ar white mica ages from cover units of the central and southern Siviez‐Mischabel Nappe. In cover units from the central and southern Siviez‐Mischabel regions of the study area, 40 Ar/ 39 Ar ages appear to date synkinematic white mica growth. Results suggest that the Siviez‐Mischabel Nappe was emplaced and developed foliation during a 5 m.y. period from 41 to 36 Ma. In cover units from the eastern Siviez‐Mischabel, however, 40 Ar/ 39 Ar white mica ages appear to date postkinematic thermal events. These thermal events may be related to Oligocene magmatic activity in the lower Pennine Nappes or to Miocene development of the Simplon fault zone. Variations in the relation between Alpine age and grain size for cover samples from the central, eastern, and southern Siviez‐Mischabel correlate well with the regional variations in temperature inferred from quartz microfabrics and the pattern of regional metamorphism. When considered in concert with other recent isotopic studies on the timing of major tectonic and thermal events in the western Swiss Alps, these data support arguments that the relative timing of events such as thrusting and back thrusting of crystalline nappes in hinterland units and exhumation of high‐pressure units in the suture zone of the western Alps are intimately related and synchronous on the scale of a few million years.
    Type of Medium: Online Resource
    ISSN: 0278-7407 , 1944-9194
    URL: Article
    DOI: 10.1029/98TC00560
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 1998
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    detail.hit.zdb_id: 780264-X
    SSG: 16,13
    SSG: 13
    Location Call Number Limitation Availability
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    Online Resource
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