Results 31 to 40 of about 92,919 (249)
Boninite and boninite-series volcanics in northern Zambales ophiolite: doubly vergent subduction initiation along Philippine Sea plate margins [PDF]
Solid Earth, 2018 A key component of subduction initiation rock suites is boninite, a high-magnesium andesite that is uniquely predominant in western Pacific forearc terranes and in select Tethyan ophiolites such as Oman and Troodos. We report, for the first time, the
A. Perez +4 more
doaj +1 more source
Simulation-Based Inference of Surface Accumulation and Basal Melt Rates of an Antarctic Ice Shelf from Isochronal Layers [PDF]
, 2023 The ice shelves buttressing the Antarctic ice sheet determine the rate of ice-discharge into the surrounding oceans. The geometry of ice shelves, and hence their buttressing strength, is determined by ice flow as well as by the local surface accumulation and basal melt rates, governed by atmospheric and oceanic conditions.
arxiv +1 more source
The stratigraphy and origin of the portaskaig boulder bed series (Dalradian) [PDF]
Geological Journal, 1965 AbstractThe late Pre‐Cambrian Portaskaig Boulder Bed Series shows a very uniform sequence for some 600 km along the Caledonian strike, from Connemara on the west coast of Ireland to Aberdeenshire in Scotland. The Series, which is divided into four groups of beds, comprises numerous individual boulder beds separated by stratified sediments.
C. Kilburn +2 more
openaire +2 more sources
Frontiers in Earth Science, 2020 The strength of foliations defined by shape preferred orientation of plagioclase in troctolitic cumulates from the Layered Series of the Skaergaard intrusion, and the Rum Eastern Layered Intrusion, increases as the grains become more tabular, due either ...
Marian B. Holness +3 more
doaj +1 more source
Earth Surface Processes and Landforms, Volume 47, Issue 15, Page 3515-3545, December 2022., 2022 Glacial geomorphology and postglacial landforms, derived from LiDAR‐based digital terrain models, together with radiocarbon‐dated sediment sequences, form the basis for landscape reconstruction spanning c. 2000 years (10,500–8500 cal. bp). After formation of streamlined terrain and ribbed moraine tracts followed intense glaciofluvial activity at ...
Per Möller +7 more
wiley +1 more source
Global Series and Stages for the Ordovician System: A Progress Report
Geologica Acta, 2005 There is no global standard set of chronostratigraphic/geochronologic subdivisions for the Ordovician System/Period. British series/epochs are often used as de facto nomenclature on stratigraphic correlation charts and geologic time scales. However, they
S. FINNEY
doaj +1 more source
Geotechnical Characteristic Assessments of Floodplain Soils Using SCPTU Data in Nanjing, China
Advances in Civil Engineering, 2022 In order to improve the understanding of such floodplain sediments and determining the validity of the tests, an extensive series of multifunctional seismic piezocone tests with pore pressure dissipation phase have been performed and supplemented with ...
Mingfei Zhang, Liyuan Tong, Qiang Wang
doaj +1 more source
Direct multi-modal inversion of geophysical logs using deep learning [PDF]
Earth and Space Science, 9, e2021EA002186 (2022), 2021 Geosteering of wells requires fast interpretation of geophysical logs, which is a non-unique inverse problem. Current work presents a proof-of-concept approach to multi-modal probabilistic inversion of logs using a single evaluation of an artificial deep neural network (DNN).
arxiv +1 more source
矿业科学学报, 2018 Based on drilling data, seismic sections and sample test results, the theory of continental to sequence stratigraphy was applied to investigate uranium accumulation of the Early Cretaceous uranium-bearing rock series in the southern margin of Erlian ...
Zhao Yue +5 more
doaj +1 more source
Near Surface Geophysics, Volume 20, Issue 6, Page 637-660, December 2022., 2022 ABSTRACT In mineral exploration, reliable and comprehensive petrophysical groundwork helps evaluate the success rate of applying geophysical methods to the target and thus improves the quality of decision‐making related to geophysical surveys. Petrophysical data for potential field exploration can be efficiently collected from drill cores together with
Hanna Leväniemi, Janne Hokka
wiley +1 more source