Results 21 to 30 of about 4,760,762 (289)

SEDIMENTS IN THE TERTIARY TANKHOI FIELD, SOUTH BAIKAL BASIN: STRATIGRAPHY, CORRELATION AND STRUCTURAL TRANSFORMATIONS IN THE BAIKAL REGION

open access: yesГеодинамика и тектонофизика, 2015
Biostratigraphic and lithofacial studies of sediments in the Tankhoi Tertiary field, which evolution reflects transformations of the terrain in the Baikal region at the Oligocene-Miocene, Early-Middle Miocene, Miocene-Pliocene and Early-Late Pliocene ...
S. V. Rasskazov   +5 more
doaj   +1 more source

Geodynamic Controls on Basaltic Volcanism in the Arabian Peninsula: Evolution of Harrat Uwayrid, Saudi Arabia

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Basaltic lavas from Harrat Uwayrid, Saudi Arabia, record the evolving magmatic and tectonic context of the Arabian Peninsula from at least the mid‐Miocene to the present day.
Shelby Bowden   +10 more
doaj   +1 more source

Response to Comment on “An early Miocene extinction in pelagic sharks” [PDF]

open access: yesScience, 2021
Naylor et al . argue that the existence of multiple denticle types within a single species precludes the use of this metric as a measure of the decline of multiple shark species. We show that species-level shark diversity would have to decrease by >90% to account for the observed >70% denticle extinction ...
Elizabeth C. Sibert, Leah D. Rubin
openaire   +4 more sources

Thermal history of the early Miocene Waitemata Basin and adjacent Waipapa Group, North Island, New Zealand [PDF]

open access: yes, 1999
Apatite fission track (AFT) and vitrinite reflectance (VR) data for early Miocene outcrops from the Waitemata Basin reveal that the basin sequence was subjected to shallow burial before denudation.
Kevin C. Hill   +9 more
core   +1 more source

The identification of Oligo-Miocene mammalian palaeocommunities from the Riversleigh World Heritage Area, Australia and an appraisal of palaeoecological techniques [PDF]

open access: yesPeerJ, 2017
Fourteen of the best sampled Oligo-Miocene local faunas from the Riversleigh World Heritage Area, north-western Queensland, Australia are analysed using classification and ordination techniques to identify potential mammalian palaeocommunities and ...
Troy J. Myers   +3 more
doaj   +2 more sources

The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison [PDF]

open access: yes, 2012
The Late Miocene (∼11.6–5.3 Ma) palaeorecord provides evidence for a warmer and wetter climate than that of today and there is uncertainty in the palaeo-CO2 record of at least 150 ppmv.
Lunt, Daniel   +24 more
core   +2 more sources

Fluvial palaeoenvironments in the intracratonic Amazonas Basin (Early Miocene-early Middle Miocene, Colombia) [PDF]

open access: yesPalaeogeography, Palaeoclimatology, Palaeoecology, 1994
Abstract Based on a detailed study of Early Miocene to early Middle Miocene sediments in the Caqueta River area (Amazonas Basin, Colombia), a reconstruction of the palaeoenvironmental and palaeogeographical history is made. Sediment composition, sedimentary sequences and transport directions indicate that the succession was deposited by a low ...
openaire   +3 more sources

Stratigraphic sequence characteristics and geochronology research progress of the Cenozoic in the arcuate tectonic belt on the northeastern margin of the Tibet Plateau

open access: yesDizhi lixue xuebao, 2023
The Cenozoic tectonic deformation and sedimentary processes in the arcuate tectonic belt along the northeastern margin of the Tibetan Plateau have been influenced by the remote effect of the subduction of the Pacific Plate as well as controlled by the ...
DONG Xiaopeng   +5 more
doaj   +1 more source

Coupled productivity and carbon isotope records in the southwest Pacific Ocean during the late Miocene–early Pliocene biogenic bloom [PDF]

open access: yes, 2002
Biogenic components of sediment accumulated at high rates beneath frontal zones of the Indian and Pacific oceans during the late Miocene and early Pliocene. The δ13C of bulk and foraminiferal carbonate also decreased during this time interval.
Dickens, G.R.   +3 more
core   +1 more source

Decapod crustacean from the Qom Formation (Lower Miocene) of the Isfahan area, Central Iran [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches
The discovery of a new specimen of Portunus withersi (Glaessner 1933) from the Lower Miocene Qom Formation in the Vartun section, north of Isfahan (Central Iran), contributes to our knowledge of this portunid species, to which most fossil portunids found
Ali Bahrami   +5 more
doaj   +1 more source

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