Late Cenozoic Evaporite Tectonism and Volcanism in West-Central Colorado

Late Cenozoic Evaporite Tectonism and Volcanism in West Central Colorado None

  • Title: Late Cenozoic Evaporite Tectonism and Volcanism in West-Central Colorado
  • Author: Gregory N. Brown Robert B. Scott Thomas W. Judkins
  • ISBN: 9780813723662
  • Page: 132
  • Format: Hardcover
  • Cenozoic Era geochronology Britannica Cenozoic life Cenozoic life was strikingly different from that of the Mesozoic The great diversity that characterizes modern day flora is attributed to the explosive expansion and adaptive radiation of the angiosperms flowering plants that began during the Late Cretaceous As climatic differentiation increased over the course of the Cenozoic, flora became and provincial. Gondwana Gondwana n d w n , or Gondwanaland , was a supercontinent that existed from the Neoproterozoic about million years ago until the Jurassic about million years ago It was formed by the accretion of several cratons.Eventually, Gondwana became the largest piece of continental crust of the Paleozoic Era, covering an area of about ,, km ,, sq mi. Geology of the Iberian Peninsula The Iberian Basin is in the east of Spain A rift system formed in the Variscan basement from Permian to Late Cretaceous At the end of the Cretaceous the basin was stretched by km In Early Neogene times the basin was inverted as a result of the Pyrenean Orogeny, part of the Alpine Chain formation This inversion resulted in the formation of mountains called the Iberian Range. Colorado Geology Overview Domain Index for www Groundwork Colorado Geology Overview The What, Where, When, How and Why of Colorado s Physical Past and Present Right Trees and snow mark major Laramide uplifts in green and white while salmon pink marks the Colorado Plateau in this true color satellite image of Colorado and surrounding states, courtesy NASA s Visible Earth Chemostratigraphy SEPMStrata Radioisotopes The only one of these techniques that actually yields absolute age dates but it has the disadvantage of both requiring the presence of sediments bearing radioactive isotopes rare , plus the assurance of a sealed system in which the mother and daughter isotopes remain in % primary proportions Carbon isotopes Most effectively used for age dating of organic matter and Fining Upward Beds SEPM Strata This is the second gallery of sedimentary structures of deepwater systems and includes outcrops of the Devonian and Mississippian of the Appalachians and the Upper Carboniferous of the Shannon basin in Co Clare in Ireland. The focus of this portion of the gallery is on graded beds and illustrates these with a number the fining upward Bouma sequence s common to many turbidite terrains. Lipid biomarkers for the reconstruction of deep time It has been shown that organisms belonging to each of the three domains of life synthesize characteristic biolipids e.g Brocks and Pearson, Briggs and Summons, , and references therein.For example, bacteriohopanepolyols, sterols, and isoprenoid glycerol dialkyl glycerol tetraethers are diagnostic compounds for the Bacteria, Eukarya, and Archaea domains, respectively e.g Global lithium resources Relative importance of pegmatite Global lithium resources Relative importance of pegmatite, brine and other deposits

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