Page 29 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists
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11 km) Magma to pene- crust. kim- depths, more limited the (upper the and on and
Know!ecoe Dritlholes 12 (to up (from drillhole continental deep-seated mantle sample is knowledge effectively, within basins crust constraints crust the
Earth observations (surface outcrops, drillholes, magma reaching observations (controlled-source seismic, deepest typical of upper or and Earth sedimentary lower the provide within
Whole the outer shells; earthquake seismic waves give most of the The km. of exception lower crustal the into Our 1.10). probe, can about data seismic velocities
ss op mantle. Geophysical 50 uppermost thickness the half the (with at deeper look (Fig. of resolution techniques within details information refraction Seismic cases,
Surface ae Direct uppermost on the in than intrusions igneous originated that km. 200 to us degrees particular show data provide (“Moho”). some in and,
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Reflection Refraction If 2 e Seismic Entire Constraints on nature of Earth’s interior. generally sample only the crust and flow) provide further constraints the lower mantle and core. generally 12 about to eruptions from come the within Geophysical with widely, but maximum Seismic in and, km) crust/mantle thickness mantle. uppermost
Seismic and Crust Gravity/ Magnetics/ Flow Heat Earthquake (Penetrate 1.10 FIGURE surface) field, heat potential information on ” materials trates Volcanic berlites) generally the by Earth. 10 crustal
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RESOLUTION Know) We (What Great Detail } A tate Bit a Quite Some Not Much not do observations detailed a from (Fig. time in back about less far time in back only not diminishes. The concept the about events about some of details We or-work). lives for like was (Europeans out stand civilizations), Egyptian vague. and deeper probe and surface deeper, we Going the
time and going deeper into the Earth. geophysical get could Jooking lifetimes, farther look deteriorates; known is what know we great also school to grandparents and life what daily events and Jonger we as ‘larger Earth’s mantle. and from the in of Earth’s 1/30th Earth’s within during surface
System in or we than to our in we As observation information lifétimes, but homes our parents some Greek, becomes becomes about deal uppermost composition entirely observations, km, about formed the
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TRE EARTH Surface Earth's Crust (0-30 km) Lithosphere Asthenosphere 700 km) (0 - Lower Mantle Core and 6300 km) (700 - resolution going back models example, geology surface interior analogous is happened that time. grandparents’ of quality the of detail appreciating in own our In Wall); Berlin the our from route that shaped about less far history, recorded Rom
Introduction History Analogy showing diminishing not (for wise about information project). KNOWLEDGE Earth’s of lot events about and parents’ the Earth, the the information, but important therefore spatially. and (the of fall (the observations events important II), but War moon; World through back development America; between can we features We Earth. the its about amoun
Chapter 1 GEOLOGIC TIME Lifetime Our Recorded §,000 years) (0 - Phanerozoic 600,000,000 years) Precambrian (600,000,000 - 4,600,000,000 years) is direction us better mapping logic EARTH knowledge Our a know We our from within deeper Jess have is resolution temporally both history shaped important of some the on continue we coming to time the but of scale the into deeper fair
10 - (0 1.9 FIGURE ' WHOLE