Arctic Ocean Sediments: Processes, Proxies, and by Ruediger Stein (Eds.)

By Ruediger Stein (Eds.)

Even though it is usually approved that the Arctic Ocean is a truly delicate and demanding area for adjustments within the international weather, this sector is the final significant physiographic province of the earth whose short-and long term geological historical past is far much less identified compared to different ocean areas. This lack of awareness is principally attributable to the key technological/logistic difficulties in attaining this harsh, ice-covered quarter with common examine vessels and in retrieving lengthy and undisturbed sediment cores. throughout the the final approximately two decades, even though, numerous overseas and multidisciplinary send expeditions, together with the 1st medical drilling on Lomonosov Ridge in 2004, a break-through in Arctic study, have been performed into the primary Artic and its surrounding shelf seas. effects from those expeditions have vastly complicated our wisdom on Arctic Ocean paleoenvironments. released syntheses concerning the wisdom on Arctic Ocean geology, nonetheless, are in keeping with facts to be had sooner than 1990. A accomplished compilation of information on Arctic Ocean paleoenvironment and its short-and long term variability in keeping with the massive quantity of recent info together with the ACEX drilling information, has now not been on hand but. With this e-book, providing (1) particular info on glacio-marine sedimentary procedures and geological proxies used for paleoenvironmental reconstructions, and (2) distinctive geological facts on glossy environments, Quaternary variability on assorted time scales in addition to the long term weather heritage in the course of Mesozoic-Tertiary occasions, this hole in wisdom should be crammed. *Aimed at experts and graduates *Presents historical past study, fresh advancements, and destiny trends*Written through a number one pupil and professional

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Today, two major current systems dominate the surface-water circulation in the Arctic Ocean: the anticyclonic Beaufort Gyre occupying most of 46 Arctic Ocean Sediments: Processes, Proxies and Palaeoenvironment West Alaska C. Navarin C. Olyutorskiy C. Yukon C. Anadyr C. Alaskan Coastal C. Lena C. Beaufort Gyre New Siberian C. East Talmyr C. West Talmyr C. Transpolar Drift Ob Yenisel C. Saint Anna C. Persey C. Yamal C. Baffin C. East East Spitz- Novozemel C. bergen C. East Greenland C. West Greenland C.

In total 320 km of multichannel seismic data were acquired along three profiles supplemented by four sonobuoys. 12). The units lie conformably on the basement. In general, the sediments can be divided into two units, the ages of which are quite hypothetical: the upper unit is most likely of Cenozoic, the lower of Cretaceous age. 7 km sÀ1 suggests oceanic basement. , 1999). Recent high-precision whole rock 40Ar/39Ar incremental heating dating of this basalt gave a plateau age of 8271 Ma ( Jokat, 2003).

Modi¢ed from Zonenshain and Natapov (1989). , 1985). , 1993) and Late Jurassic to Neocomian extension in the Amerasia Basin. Taken from Grantz et al. (1998) where details of reconstruction and database are described. Introduction to the Arctic: Significance and History 25 Rachor, & Schewe, 1999). In total 320 km of multichannel seismic data were acquired along three profiles supplemented by four sonobuoys. 12). The units lie conformably on the basement. In general, the sediments can be divided into two units, the ages of which are quite hypothetical: the upper unit is most likely of Cenozoic, the lower of Cretaceous age.

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