Results 21 to 30 of about 3,619,968 (360)
Stratigraphy of the Miocene Series in the Hiki Hills, Saitama Prefecture, central Japan
The Journal of the Geological Society of Japan, 2004 埼玉県比企丘陵と岩殿丘陵の間にわずかに露出する海成中新統より, Denticulopsis lauta帯を示す珪藻化石が産出した. 新たに得られた珪藻化石年代と既存の報告を総括し, 比企丘陵の岩相層序を年代層序に基づいて整理した. その結果, 15.4 Maを境にして下位の珪藻質シルト岩からなる荒川層と, 上位の砂質シルト岩からなり不淘汰角礫岩や砂質シルト岩さらに砂質シルト岩の同時礫を取り込む海底地滑り堆積物からなる市ノ川層に二分されることが判明した. 新たに得られたT-3凝灰岩 (畠山凝灰岩) のフィッショントラック年代は上記年代層序と矛盾しない.
Masaki Takahashi, Yukio Yanagisawa
openalex +3 more sources
PETROGRAPHY AND THERMODYNAMIC REACTIONS OF SOME OF THE ROCKS IN THE BANKET SERIES OF THE TARKWAIAN SUPERGROUP [PDF]
Geological Behavior, 2023 The Banket Series, which is a paleoplacer deposit, is the third formation in the stratigraphy of Tarkwaian Supergroup. This project seeks to study petrographically; the lithologies in the banket series to confirm the rocks identity as already known or ...
Matthew Coffie Wilson +1 more
doaj +1 more source
PLoS ONE, 2023 The construction of the Iron Age Mediterranean chronology began in the Levant based on historical evidence and has been additionally supported in recent decades by means of radiocarbon analysis, although with variable precision and ratification.
Claude Doumet-Serhal +4 more
doaj +2 more sources
Frontiers in Earth Science, 2023 The stratigraphy of the European late Permian-Triassic commonly lacks chronostratigraphic constraint due to the scarcity of diagnostic fossils for biostratigraphy.
Jack Salisbury +2 more
doaj +1 more source
Jurassic stratigraphy of East Greenland
GEUS Bulletin, 2021 The East Greenland Rift Basin comprises a series of Jurassic subbasins with different crustal configurations, and somewhat different tectonic histories and styles.
F. Surlyk +10 more
semanticscholar +1 more source
, 1974 PhD ; Geology ; University of Michigan, Horace H. Rackham School of Graduate Studies ; http://deepblue.lib.umich.edu/bitstream/2027.42/180544/2/7425172 ...
Santiago Charleston
openalex +3 more sources
Iraqi Geological Journal, 2023 Six lithostratigraphic sections distributed in different parts of the Errachidia-Boudenib-Erfoud basin (SE Morocco) were surveyed bed by bed and sampled in order to study stratigraphy, analyzed the facies, and characterized the depositional ...
Ismail Chaaou +2 more
doaj +1 more source
Quaternary stratigraphic regionalization and comprehensive framework in Nanling and adjacent areas
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 Anthropocene Review, 2023 We review and compare proposals for 12 reference sections submitted to the Anthropocene Working Group of the International Subcommission on Quaternary Stratigraphy, of which one will be recommended as the Global boundary Stratotype Section and Point ...
C. Waters +3 more
semanticscholar +1 more source
Sensitivity of isochrones to surface mass balance and dynamics
Journal of Glaciology, 2023 The interior of an ice sheet consists of layers of accumulated snow, which contain important information on accumulation and ice dynamics that are imprinted on layer shapes over time.
Alexios Theofilopoulos, Andreas Born
doaj +1 more source