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  • 1
    Online Resource
    Online Resource
    Milton :Taylor & Francis Group,
    Keywords: Geology--Central America. ; Natural resources--Central America. ; Hazardous geographic environments--Central America. ; Electronic books.
    Description / Table of Contents: An integrated treatment of the principal fields of classical and applied geosciences of Central America, this authoritative two-volume monograph treats the region as a whole, exploring geology, earth resources and geo-hazards across political boundaries. It reviews the published literature, and supplements it with an abundance of information from ongoing investigations and internal reports. Covering a region rich in geological resources and where natural disasters are frequent, the monograph provides a solid foundation for local and international institutions concerned with land-use, infrastructure, water and energy resources, and mining, as well as with hazard reduction and disaster prevention.
    Type of Medium: Online Resource
    Pages: 1 online resource (1392 pages)
    Edition: 1st ed.
    ISBN: 9780203947043
    DDC: 557.2
    Language: English
    Note: Front Cover -- Table of contents -- List of contributors -- List of reviewers -- Authors' acknowledgements -- Editors' foreword -- Editors' note -- About the editors -- Chapter 1. Geographical, social, economic, and environmental framework and developments -- Chapter 2. History of geology -- Chapter 3. Geomorphology and physiographic provinces -- Chapter 4. Volcanism and volcanic landforms -- Chapter 5. Karst landscapes -- Chapter 6. Glacial geology and geomorphology -- Chapter 7. Coastal morphology and coral reefs -- Chapter 8. Overview of plate tectonic history and its unresolved tectonic problems -- Chapter 9. Convergent margin tectonics: A marine perspective -- Chapter 10. Crustal structure -- Chapter 11. Structural geology: From local elements to regional synthesis -- Chapter 12. Seismicity and neotectonics -- Chapter 13. Stratigraphy and geologic history -- Chapter 14. Onshore to offshore tephrostratigraphy and marine ash layer diagenesis -- Chapter 15. Late Quaternary lake and swamp sediments: Recorders of climate and environment -- Chapter 16. Vertebrate paleontology -- Chapter 17. Invertebrate paleontology -- Chapter 18. Micropaleontology -- Chapter 19. Metamorphism and metamorphic rocks -- Chapter 20. Oceanic igneous complexes -- Chapter 21. Intrusive rocks -- Chapter 22. Petrology and geochemistry of lavas -- Chapter 23. Petrogenesis of ignimbrites -- Chapter 24. Hydrogeology -- Chapter 25. Water availability, use and valuation -- Chapter 26. High and low enthalpy geothermal resources and potentials -- Chapter 27. Hydrogeochemical and isotopic composition of geothermal fluids -- Chapter 28. Gas geochemistry of volcanic and hydrothermal fluids -- Chapter 29. Geothermal resources for development -valuation, present use and future opportunities -- Chapter 30. Petroleum geology -- Chapter 31. Coal and peat resources. , Chapter 32. Metallic mineral resources -- Chapter 33. Industrial minerals -- Chapter 34. Geology-related tourism for sustainable development -- Chapter 35. Seismic hazard and microzonation -- Chapter 36. Seismic monitoring -- Chapter 37. Strong-motion monitoring -- Chapter 38. Volcanic activity, hazards, and monitoring -- Chapter 39. Volcano seismology -- Chapter 40. Earthquake-induced landslides -- Chapter 41. Earthquake triggered tsunamis -- Back Cover.
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  • 2
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry, Geophysics, Geosystems 14 (2013): 1087–1103, doi:10.1002/ggge.20079.
    Description: Island arcs are proposed to be essential building blocks for the crustal growth of continents; however, island arcs and continents are fundamentally different in bulk composition: mafic and felsic, respectively. The substrate upon which arcs are built (oceanic crust versus large igneous province) may have a strong influence on crustal genesis. We present results from an across-arc wide-angle seismic survey of the Costa Rican volcanic front which test the hypothesis that juvenile continental crust is actively forming at this location. Travel-time tomography constrains velocities in the upper arc to a depth of ~15 km where average velocities are 〈6.5 km/s. The upper 5 km of crust is constrained by velocities between 4.0 and 5.5 km/s, which likely represent sediments, volcaniclastics, flows, and small intrusions. Between 5 and 15 km depth, velocities increase slowly from 5.5 to 6.5 km/s. Crustal thickness and lower crustal velocities are roughly constrained by reflections from an inferred crust-mantle transition zone. Crustal thickness beneath the volcanic front in Costa Rica is ~40 km with best-fit average lower-crustal velocities between 6.8 and 7.1 km/s. Overall, velocities across the arc in central Costa Rica are at the high-velocity extreme of bulk continental crust velocities and are lower than modern island arc velocities, suggesting that continental compositions are created at this location. These data suggest that preexisting thick crust of the Caribbean Large Igneous Province has a measurable effect on bulk composition. This thickened arc crust may be a density filter for mafic material and thereby support differentiation toward continental compositions.
    Description: Funding was provided by the NSF-MARGINS and ODP programs, under NSF grant OCE-0405654 and project Nº 113- A4-408 from the University of Costa Rica.
    Description: 2013-10-29
    Keywords: Continental crust ; Island arc ; Seismic refraction ; Costa Rica
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Format: text/plain
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