Results 1 to 10 of about 15,112 (291)

Archaediscoid foraminifers and their significance in biostratigraphy and chronostratigraphy of the lower Carboniferous deposits, a case study on the northern Alborz [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2017
A relatively complete succession of Viséan to Serpukhovian rocks is exposed in the northern Alborz, where two sections Naserabad and Dozdehban have been selected for their biostratigraphic interest.
Keyvan Zandkarimi   +2 more
doaj   +1 more source

Cinq occupations du Paléolithique moyen du Début Glaciaire weichselien : le gisement de Soindres (Yvelines). Stratigraphie et industries lithiques

open access: yesGallia Préhistoire, 2021
. The excavation of the Middle Palaeolithic site of Soindres has made possible to observe an exceptionally dilated pedosedimentary sequence, related to the last glaciation.
Jean-Luc Locht, Christine Chaussé
doaj   +1 more source

Seismic stratigraphy and history of deep circulation and sediment drift development in Baffin Bay and the Labrador Sea [PDF]

open access: yes, 1989
Drilling results and seismic-reflection records at and across Ocean Drilling Program (ODP) Sites 645 (western Baffin Bay), 646, and 647 (Labrador Sea) provide important constraints on the history of deep-water circulation and sedimentation in response to
Arthur, M.A.   +4 more
core   +1 more source

Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Biostratigraphy of the Hareelv Formation (Upper Jurassic) in the Blokelv-1 core, Jameson Land, central East Greenland [PDF]

open access: yesGeological Survey of Denmark and Greenland Bulletin, 2018
The Hareelv Formation in the Blokelv-1 core is biostratigraphically subdivided by means of ammonite and dinoflagellate cyst stratigraphy. The succession ranges from the Oxfordian C. densiplicatum Chronozone to the Volgian P. elegans Chronozone.
Peter Alsen, Stefan Piasecki
doaj  

The chronostratigraphy of protoplanet Vesta [PDF]

open access: yesIcarus, 2014
In this paper we present a time-stratigraphic scheme and geologic time scale for the protoplanet Vesta, based on global geologic mapping and other analyses of NASA Dawn spacecraft data, complemented by insights gained from laboratory studies of howardite–eucrite–diogenite (HED) meteorites and geophysical modeling.
Williams, D.A.   +6 more
openaire   +3 more sources

THE GELASIAN STAGE: A PROPOSAL OF A NEW CHRONOSTRATIGRAPHIC UNIT OF THE PLIOCENE SERIES

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
A new Stage, the Gelasian, is proposed as the third upper subdivision of the Pliocene Series. The GSSP of the base of the Gelasian Stage and of the Middle Pliocene-Upper Pliocene boundary is coincident with a "sapropel" level which outcrops in the Monte ...
DOMENICO RIO   +2 more
doaj   +1 more source

Unravelling upbuilding pedogenesis in tephra and loess sequences in New Zealand using tephrochronology [PDF]

open access: yes, 2010
The genesis of soils developed in either tephra or loess on stable sites differs markedly from that of soils developed on rock because classical topdown processes operate in conjuction with geological processes whereby material is added to the land ...
Lowe, David J., Tonkin, Philip J.
core   +1 more source

Chronostratigraphy of Jerzmanowician. New data from Koziarnia Cave, Poland

open access: yesbioRxiv, 2020
Lincombian-Ranisian-Jerzmanowician (LRJ) sites are sparse, and Koziarnia Cave in Poland is one of only few such sites situated at the eastern fringe of LRJ. The aim of the recent study was to obtain new chronostratigraphic data for the LRJ industries due
Małgorzata Kot   +11 more
semanticscholar   +1 more source

Cobalt-Rich Fe-Mn Crusts in the Western Pacific Magellan Seamount Trail: Geochemistry and Chronostratigraphy

open access: yesGeosciences
Synthesis of published and new data from the Govorov and Kocebu guyots provide geochemical and chronostratigraphic constraints on hydrogenetic cobalt-rich Fe-Mn crusts from the Western Pacific Magellan Seamount Trail (MST).
Igor S. Peretyazhko   +2 more
doaj   +1 more source

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