Results 91 to 100 of about 116,871 (355)

Multi‐sequential order transgressive cycles from the last interglacial to the Holocene revealed by deep‐core sediment facies analysis in the Baeksu tidal deposits, south‐west coast of Korea

The Depositional Record, EarlyView.
With the aid of a chronologically well‐constrained stratigraphy, facies and sequence analyses were carried out on three drill‐cores obtained from estuarine macrotidal flats. The sequence analysis of the late Quaternary tidal deposits shows that four transgressions occurred in multi‐sequential order, whereas the intervening regressive phases were much ...
Serin Lim, Jin Cheul Kim, Dhongil Lim, Yongmi Kim, Tae Soo Chang   +4 more
wiley   +1 more source

Laboratory leaching tests to investigate mobilisation of metals within engineered geothermal reservoirs [PDF]

E3S Web of Conferences, 2019
Combining geothermal energy utilization with the extraction of metals in a single interlinked process offers a way to improve the economics of engineered geothermal systems.
Rochelle Christopher, Kilpatrick Andrew, Osvald Máté, Szanyi János, Medgyes Tamás, Kóbor Balázs   +5 more
doaj   +1 more source

Intergranular diffusion rates from the analysis of garnet surfaces: implications for metamorphic equilibration [PDF]

, 2017
Novel approaches to garnet analysis have been used to assess rates of intergranular diffusion between different matrix phases and garnet porphyroblasts in a regionally metamorphosed staurolite-mica-schist from the Barrovian-type area in Scotland.
Chung, Peter, Dempster, Tim J., Symon, Shona   +2 more
core   +1 more source

The role of refluxing deep hypersaline brines and evaporite precipitation dynamics in the Castile Formation and marginal carbonate strata (Delaware Basin, USA)

The Depositional Record, EarlyView.
The Upper Permian Castile Formation of the Delaware Basin, a 515.3 m (1690.6 ft) thick deep‐water evaporitic sequence dominated by anhydrite and halite, is the focus of this study. This study's sedimentological and geochemical analysis of cores from the basin's centre and margin reveals that dynamic reflux of deep hypersaline brines significantly ...
Ander Martinez‐Doñate, Lorena Moscardelli, Lucy Tingwei Ko, Leandro Melani, C. Nur Schuba, Priyanka Periwal, Shuvajit Bhattacharya   +6 more
wiley   +1 more source

Crystallization and cooling conditions for diogenite formation in the turbulent magma ocean of asteroid 4 Vesta [PDF]

, 2016
Despite its small size, the asteroid 4 Vesta has been completely differentiated to core and mantle. Its composition is similar to howardite--eucrite--diogenite (HED) meteorites of which the detailed petrology is known. Therefore, Vesta is a good target for understanding the differentiation of terrestrial planets.
arxiv   +1 more source

Geologic structure and composition of Munilkan massif Verkhoyansk-Kolyma orogenic area

Литосфера, 2015
This article presents the results of detailed study of geologic structure and composition of Munilkan massif of the Main batholith belt of Verkhoyansk-Kolyma mesozoides (Tas-Khayakhtakh Ridge).
V. A. Trunilina, S. P. Roev, A. I. Zaitsev   +2 more
doaj   +2 more sources

The mineralogy, petrology, and composition of anomalous eucrite Emmaville [PDF]

, 2017
The Emmaville eucrite is a relatively poorly studied basaltic achondrite with an anomalous oxygen isotope signature. In this study, we report comprehensive mineralogical, petrographic, and geochemical data from Emmaville in order to understand its ...
Barrat, Barrat, Bland, Bogard, Bunch, Clayton, Cleverly, Eggins, Floss, Ghosh, Greenwood, Greenwood, Greenwood, Greenwood, Janots, Lodders, Mandler, Mason, Mayne, McSween, Metzler, Miller, Miller, Mittlefehldt, Mittlefehldt, Mittlefehldt, Morgan, Nyquist, Palme, Papike, Qin, Righter, Rogers, Scott, Spivak-Birndorf, Starkey, Stolper, Takeda, Takeda, Trinquier, Warren, Wasson, Weisberg, Wiechert, Yamaguchi, Yamaguchi, Yamaguchi, Yamaguchi   +47 more
core   +1 more source

Combining machine learning techniques, microanalyses and large geochemical datasets for tephrochronological studies in complex volcanic areas: new age constraints for the Pleistocene magmatism of Central Italy [PDF]

, 2017
Characterization, correlation and provenance determination of tephra samples in sedimentary sections (tephrochronological studies) are powerful tools for establishing ages of depositional events, volcanic eruptions, and tephra dispersion. Despite the large literature and the advancements in this research field, the univocal attribution of tephra ...
arxiv   +1 more source

Petrology, Magnetic susceptibility, Tectonic setting and mineralization associated with Plutonic and Volcanic Rocks, Eastern Bajestan and Taherabad, Iran

Journal of Economic Geology, 2010
Study area is located in district of Bajestan and Ferdows cities, NE of Iran. Structurally, this area is part of Lut block. The oldest exposed rocks, to the north of intrusive rocks and in Eastern Bajestan, are meta-chert, slate, quartzite, thin-bedded ...
Maliheh Ghoorchi Rooki, Saeed Saadat, Ali Reza Ashouri   +2 more
doaj   +1 more source

Development of non‐destructive analytical strategies based on Raman spectroscopy and complementary techniques for Mars Sample Return tested on Northwest Africa 1950 Martian meteorite

Journal of Raman Spectroscopy, Volume 53, Issue 12, Page 2068-2085, December 2022., 2022
A non‐destructive analytical methodology, based on Raman microscopy (single point and imaging), micro‐energy dispersive X‐ray fluorescence (μED‐XRF) imaging analysis, and scanning electron microscopy coupled to energy dispersive spectroscopy (SEM‐EDS), is suggested for a first analytical characterization for the Martian samples that will be taken to ...
Leire Coloma, Cristina García‐Florentino, Jennifer Huidobro, Imanol Torre‐Fdez, Julene Aramendia, Gorka Arana, Kepa Castro, Juan Manuel Madariaga   +7 more
wiley   +1 more source