Results 21 to 30 of about 2,710,958 (297)

Quaternary stratigraphic regionalization and comprehensive framework in Nanling and adjacent areas

open access: yes地质科技通报, 2021
The Quaternary sediments in the Nanling and adjacent areas are dominated by alluvial, eluvium and cave deposits, which have lacked of a unified stratigraphic and chronological framework.Based on the results of field survey and research on profiles, the ...
Yuanrun Shi   +4 more
doaj   +1 more source

The Salittu Formation in southwestern Finland, part I: Structure, age and stratigraphy [PDF]

open access: yesBulletin of the Geological Society of Finland, 2016
Because of the relatively low metamorphic grade, low strain and well-preserved early structures in volcanic and volcaniclastic rocks, the Orijärvi triangle (in the center of the larger Orijärvi area) is one of the few locations in the Svecofennian orogen
M. Nironen, I. Mänttäri, M. Väisänen
doaj   +1 more source

The History of the Aptian Stage Stratigraphy and Ammonoids of the Central Part of the Northern Caucasus Studies. Paper 2. 1970 to Present [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Науки о Земле
The offering work covers the history of the Aptian stage stratigraphy and ammonites studies of the central part of the Northern Caucasus. Its first part, devoted to the history of the mid-19th century to the mid-20th century, was published earlier.
Polkovoi, Kirill Sergeevich
doaj   +1 more source

Sedimentary stratigraphy of Lake Chalco (Central Mexico) during its formative stages [PDF]

open access: yesInternational Journal of Earth Sciences, 2021
Lake Chalco lies south of the Basin of Mexico and has been the subject of studies related to Late Quaternary climate variability. In 2016, the International Continental Scientific Drilling Program “MexiDrill Project” recovered a 520-m sediment record from Lake Chalco.
Rodrigo Martínez-Abarca   +8 more
openaire   +3 more sources

Sharp‐based shoreface successions reconsidered in three‐dimensions: A forward stratigraphic modelling perspective

open access: yesThe Depositional Record, 2022
Sea‐level fall is commonly inferred to generate a sharp‐based shoreface succession that displays an abrupt vertical transition from heterolithic, lower shoreface to sandy, upper shoreface deposits across a marine erosion surface.
Brian J. Willis   +2 more
doaj   +1 more source

Chronology with a pinch of salt:Integrated stratigraphy of Messinian evaporites in the deep Eastern Mediterranean reveals long-lasting halite deposition during Atlantic connectivity [PDF]

open access: yes, 2019
The Messinian Salinity Crisis (MSC; 5.97–5.33 Ma) is considered an extreme environmental event driven by changes in climate and tectonics, which affected global ocean salinity and shaped the biogeochemical composition of the Mediterranean Sea. Yet, after
Waldmann, Nicolas D.   +13 more
core   +2 more sources

Marine Isotope Stages: Oxygen Isotope Stratigraphy

open access: yes, 2022
versión ...
Bardají, Teresa, Lario Gómez, Javier
openaire   +2 more sources

Stable isotope stratigraphy of the early Quaternary of borehole Noordwijk, southern North Sea [PDF]

open access: yes, 2015
Between 2.58Ma and 2.4Ma, most of the present onshore sector of the Netherlands was an epicontinental sea. Previous studies suggest the occurrence of multiple cold and warm phases in shallow marine successions of the Maassluis Formation in conjunction ...
Munsterman, D. K.   +10 more
core   +2 more sources

A new stage in the evolution of the mole rats (Rodentia, Spalacinae) from the Early Miocene of northern Greece [PDF]

open access: yes, 2017
The cheek teeth of Debruijnia kostakii n. sp. from the Early Miocene of Karydia are only slightly smaller than those of the largest extant species of the Spalacinae (Spalax giganteus), but show characteristics that are reminiscent of its Paleogene ...
Stratigraphy & paleontology   +2 more
core   +1 more source

Clumped isotope thermometry reveals diagenetic origin of the dolomite layer within late Ordovician black shale of the Guanyinqiao Bed (SW China) [PDF]

open access: yes, 2022
The origin of widespread dolomite deposits in Paleozoic strata is a longstanding open question. Here we use a suite of geochemical methods to investigate a prominent Paleozoic dolomite occurrence in SW China.
Stratigraphy & paleontology   +8 more
core   +3 more sources

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