Sea Level Fluctuation During the Past 6000 yr at the Coast of Mauritania

Einsele, Gerhard; Herm, Dietrich; Schwarz, Hans-Ulrich

doi:10.1016/0033-5894(74)90017-9

Cited by 45 publications

(10 citation statements)

References 3 publications

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“…RSLs with the type R2 are observed at New Zealand (GIBB, 1983) and southeast Australia (THOM, 1983). RSLs like R3 with the sea level high around 4,000 or 5,000 years ago are observed at Recife (FAIRBRIDGE, 1976) and Mauritania (EINSELE et al, 1974). The transition from R1 to R3 may be continuous.…”

Section: Discussionmentioning

confidence: 98%

Theoretical world-wide sea level change associated with non-Newtonian flow in the upper mantle.

Nakada

1984

J,Phys,Earth

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Section: Discussionmentioning

confidence: 98%

Theoretical world-wide sea level change associated with non-Newtonian flow in the upper mantle.

Nakada

1984

J,Phys,Earth

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“…The organic carbon content on the continental slope of the Arabian Sea (Indian Ocean) tells of palaeoclimatic changes and monsoon development in the adjacent continents (Berner and Lasaga, 1989;Sirocko, 1995). Sea level fluctuations show global climatic changes as well ( Faure and Elouard, 1967;Einsele et al, 1974). Geophysical methods also contribute (Schumm, 1977; Prell and Kutzbach, 1987) and astronomic theories, like Milankovitch's, have led to the explanation of climatic changes (Berger and Tricot, 1986; Blum and Törnquist, 2000).…”

Section: Geological and Biological Criteriamentioning

confidence: 99%

Evaporite mineralogy and major element geochemistry as tools for palaeoclimatic investigations in arid regions: A synthesis

Smykatz-Kloss¹,

Roy²

2010

BSGM

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This paper presents a synthesis of the applications of evaporite mineralogy and the relationship between major elements for the palaeoclimatological research of arid regions, with examples from Playa Oum el Krialate in Tunisia, Wadi Natron in Egypt, East African Rift Valley, etc. The numerous evaporite minerals serving as indicators of palaeo-drylands (salinity and evaporation) include carbonates, sulfates, and Na, K, Ca, and Mg chlorides. The occurrence of double salts, such as glauberite, carnallite, kainite, gaylussite, pirssonite, burkeite, etc., suggests disequilibrium conditions. Apart from that, the presence of very rare Fe-sulfates, such as rozenite and szomolnokite, indicates anoxic conditions with higher salinity. The formation of Na-silicates, such as magadiite and kenyaite, implies a decrease in pH of a highly alkaline Na concentrated brine. The Mg-silicates (palygorskite, Mg-montmorillonite and talc) form quickly and then re-dissolve when conditions change. Identification of fulgurites in the Sahara has been related to palaeo-lightning. We have also discussed a simple geochemical approach of using the ratios of soluble/insoluble elements to identify palaeo-arid events with examples from loess-soil sequences from Feiran Oasis in the Sinai Desert (Egypt) and salty silt lacustrine sequences from Thar Desert (India).

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“…Holocene high sea stands have been documented around the world, including western Africa (Einsele et al 1974), Europe (Tooley 1978), Brazil (Suguio et al 1992), and the Gulf Coast of Texas (prewitt and Paine 1987). Some have related high sea stands to the Holocene climatic optimum, which would have triggered or accelerated the melting of continental glacial ice (Fairbridge 1961;Morner 1984b).…”

Section: Evidence Of a Late Holocenementioning

confidence: 99%

Archeological and Geomorphological Investigations at Prehistoric Sites 41WY50 and 41WY60, Willacy County, Texas

1994

ITA

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In January through March 1993, archeological and geomorphological investigations were conducted at two clay dune sites, 41WY50 and 41WY60, in the outfall area of the Hidalgo-Willacy Drainage Ditch system. This work represents the final investigations of a cultural resource management program conducted for the U.S. Army Corps of Engineers and the local sponsors, Hidalgo County Drainage District No. 1 and Willacy County Drainage District No. I, by Prewitt and Associates, Inc. The results of the archeological investigations were poor. Neither site yielded materials of unquestionable cultural origin, although several small basin-shaped hearth features were encountered. Based on radiocarbon assays from soil humates and the stratigraphic provenience of the features, it is speculated that the occupation(s) at 41WY50 is late Archaic and the occupation(s) at 41WY60 is Late Prehistoric to Historic. Both sites represent very short term occupations and most likely do not represent repetitive use on a seasonal or yearly basis. These investigations suggest that, since the development of the modem coastal environments approximately 3,000 to 4,000 years ago, the south Texas coast between Baffin Bay and the Holocene delta of the Rio Grande has been a resource-poor and inhospitable area that probably was utilized only sparsely or intermittently. The geomorphological investigations were more successful, adding valuable data ahout paleoenvironments and the formation of the modem coastal environments of the Lower Rio Grande Valley. The clay dunes formed through the eolian transport of fine to very fine quartz sand and fine to very fine sand-sized aggregates of clay from adjacent wind-tidal flats during the late Holocene. Stable carbon isotope studies of soil humates suggest that the clay dune plant community was and still is dominated by C, and/or CAM plants. These investigations also disclosed fluctuations in sea level during the late Holocene. An abandoned wind-tidal flat, encountered at 41WY50, indicates that sea level was at least I m higher than present mean sea level between 2300-1100 B.P.

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Sea Level Fluctuation During the Past 6000 yr at the Coast of Mauritania

Cited by 45 publications

References 3 publications

Theoretical world-wide sea level change associated with non-Newtonian flow in the upper mantle.

Theoretical world-wide sea level change associated with non-Newtonian flow in the upper mantle.

Evaporite mineralogy and major element geochemistry as tools for palaeoclimatic investigations in arid regions: A synthesis

Archeological and Geomorphological Investigations at Prehistoric Sites 41WY50 and 41WY60, Willacy County, Texas

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