Desert sedimentary environments, present and past—A summary

Glennie, K. W.

doi:10.1016/0037-0738(87)90031-5

Cited by 75 publications

(81 citation statements)

References 26 publications

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“…The Skeleton Coast, extending from southern Angola through Namibia into South Africa (Seeley, 1990), is a classic coastal desert (Glennie, 1987) resulting from the orientation of the coastline below the high-pressure, descending limb of the Southern Hemisphere Hadley cell between 15º and 30ºS, exacerbated by upwelling that brings cold, nutrient-rich water to the surface. The stratigraphic evidence for aridity in that region is the lithified aeolianites of the Etjo Sandstone underlying the Etendeka Basalts in the Huab Basin, Namibia (Catuneanu et al, 2005;Jerram et al, 2000a, b;Mountney et al, 1998Mountney et al, , 1999a.…”

Section: Northward Drift Of Africamentioning

confidence: 99%

Post-Gondwana Africa and the vertebrate history of the Angolan Atlantic Coast

Jacobs¹,

Polcyn²,

Mateus³

et al. 2016

MMV

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Section: Northward Drift Of Africamentioning

confidence: 99%

Post-Gondwana Africa and the vertebrate history of the Angolan Atlantic Coast

Jacobs¹,

Polcyn²,

Mateus³

et al. 2016

MMV

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“…4A). Continuous, laminated sand sheets may represent crevassesplay deposits or reworked eolian sediments blown onto the low-gradient fl oodplain from nearby abandoned channels (Glennie, 1970;Hardie et al, 1978). Trough cross-bedding within the discontinuous conglomerate sheets is interpreted to represent channel bars within the fl uvial system.…”

Section: Interpretationsmentioning

confidence: 99%

Climatic and tectonic controls on sedimentation and erosion during the Pliocene-Quaternary in the Qaidam Basin (China)

Heermance

Pullen

Kapp

et al. 2013

Geological Society of America Bulletin

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“…The Permian-Triassic interval has long been regarded as unusual, representing a unique and extreme paleoclimatic state, because red beds and evaporites were global in extent (Schwarzbach, 1963;Waugh, 1973;Turner, 1980;Glennie, 1987; and many others) and because evaporite depositional regimes covered more area in the Triassic than at any other time (Gordon, 1975). As data on paleoclimatically significant fossils and rocks have gradually been accumulated and put into the context of plate tectonics, the uniqueness of the Permian-Triassic has only been emphasized.…”

Section: Introductionmentioning

confidence: 99%

The Pangaean Megamonsoon: Evidence from the Upper Triassic Chinle Formation, Colorado Plateau

Dubiel

Parrish

et al. 1991

PALAIOS

174

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The Upper Triassic Chinle Formation was deposited at an exceptional time in Earth's paleogeographic and paleoclimatic history. During the Triassic, the supercontinent Pangaea was at its greatest size, in terms of both aggregated continental crust and exposed land area. Moreover, the exposed land was divided symmetrically about the paleoequator between the northern and southern hemispheres. These conditions were ideal for maximizing monsoonal circulation, as predicted from paleoclimate models. The Chinle was deposited between about 5?to 15?N paleolatitude in the western equatorial region of Pangaea, a key area for documenting the effects of the monsoonal climate. This study summarizes sedimentologic and paleontologic data from the Chinle Formation on the Colorado Plateau and integrates that data with paleoclimatic models. The evidence for abundant moisture and seasonality attest to the reversal of equatorial flow and support the hypothesis that the Triassic Pangaean climate was dominated by monsoonal circulation.The Chinle Formation contains continental lithofacies deposited in fluvial channels, crevasse splays, lakes, bogs, marshes, and lacustrine deltas that reflect abundant precipitation and shallow water tables. Paleosols and ichnofossils indicate that water tables and lake levels fluctuated episodically. Interbedded lacustrine carbonates and marginal-lacustrine siltstones and mudstones indicate longer-term but regular, episodic fluctuations in lake level. Fine-scale laminations in lacustrine carbonates suggest a seasonal influx of clastic sediment, and thus precipitation, to the basin. Uppermost Chinle strata consist of lacustrine and marginal-lacustrine mudstones interbedded with minor eolian sand sheets and eolian dunes; thus, the later Triassic reflects continued precipitation, but was marked by more pronounced and extended dry seasons.The PALAIOS, Vol. 6, No. 4 (Aug., 1991), pp. 347-370 This article is a U.S. government work, and is not subject to copyright in the United States. perennial fluvial and/or lacustrine systems. The tetrapod fauna is dominated by aquatic forms, notably metoposaurid amphibians, and phytosaurian archosaurs; terrestrial archosaurs and synapsids are more poorly represented quantitatively. Vertebrate taphonomy and the nature of skeletal preservation also provide evidence of seasonality during Chinle deposition.

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Desert sedimentary environments, present and past—A summary

Cited by 75 publications

References 26 publications

Post-Gondwana Africa and the vertebrate history of the Angolan Atlantic Coast

Post-Gondwana Africa and the vertebrate history of the Angolan Atlantic Coast

Climatic and tectonic controls on sedimentation and erosion during the Pliocene-Quaternary in the Qaidam Basin (China)

The Pangaean Megamonsoon: Evidence from the Upper Triassic Chinle Formation, Colorado Plateau

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