Results 81 to 90 of about 11,823 (188)

Hyperspectral Fingerprinting of Dune Sediments Across the Arabian Peninsula: Insights Into Sediment Provenance and Transport Pathways From NASA's EMIT Data

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The Arabian Peninsula encompasses one of the world's most extensive aeolian systems, yet the provenance and transport history of its dune sediments are not well understood. Using hyperspectral data from NASA's Earth Surface Mineral Dust Source Investigation (EMIT), we mapped mineral compositions and abundance patterns across dune fields and ...
Ahmed Alshakr, Mohamed Sultan, Mustafa Kemal Emil, Hassan Alharbi, Fahad Alshehri, Abdullah A. Alotaibi, Abdullah T. Mohammad, Aylin Yildirim, Neil C. Sturchio   +8 more
wiley   +1 more source

Low Abundances of Ultramafic Components in the Chang'e‐6 Landing Site Basalt and Ejecta Material

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The South Pole‐Aitken (SPA) Basin, the Moon's largest impact structure, holds key insights into lunar evolution, prompting the Chang'e‐6 mission to return first samples for ground‐truth verification. Analysis of over 6,000 grains from the Chang'e‐6 soil returned from the SPA Basin reveals a composition dominated by clinopyroxene (26.5–32.9 vol.
Zhenbing She, Zaicong Wang, Tianyang Li, Hao Zhang, Qi He, Yiheng Li, Antong Gao, Yi Gu, Zichen Wei, Yan Zhuang, Changhao Ni, Shuang Shi, Jiawei Li, Jiawei Zhao, Wen Zhang, Jiaqi Zheng, Xu Chen, Keqing Zong, Zhaochu Hu, Xiang Wu, Long Xiao   +20 more
wiley   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, Volume 5, Issue 2, Page 506-538, June 2026.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

An Analysis of an Appalachian Metamorphic Suite

, 2011
The Blue Ridge is one of over a dozen provinces located in the much larger Appalachian Mountain Range which spans across the eastern United States. The Appalachian Mountains began to form close to 500 million years ago and rocks within the Blue Ridge ...
Williams, Chadwick A.
core  

Effects of Climate and Water Limitation on Reproductive Traits and Trait Divergence Across Soil Boundaries in a Serpentine‐Tolerant Annual Herb

Ecology and Evolution, Volume 16, Issue 6, June 2026.
Soil and precipitation can drive divergence in plant populations, yet less is known about the potential for synergistic effects between soil and precipitation on reproductive traits. We characterized variation in flowering phenology across soil boundaries and along a precipitation gradient and experimentally evaluated how water limitation affects ...
Nicole Ibañez, John Paul, Adelaide Ergastolo, Sevan Suni   +3 more
wiley   +1 more source

Spectral properties of carbonatized ultramafic mantle xenoliths and their host olivine basalts, Jabal Al Maqtal basin, South Eastern Desert, Egypt, using ASD FieldSpec spectroradiometer

Egyptian Journal of Remote Sensing and Space Sciences, 2011
Understanding the spectral properties of the carbonatized ultramafic mantle xenoliths and their host olivine basalts exposed at Jabal Al Maqtal strike-slip basin, south Eastern Desert, Egypt using portable ASD FieldSpec is the main task of this article ...
Ahmed A. Madani
doaj   +1 more source

The Linear‐Leaved Dracaena Complex (Asparagaceae) in Borneo, With 13 New Species

Feddes Repertorium, Volume 137, Issue 2, June 2026.
ABSTRACT The Bornean Dracaena are morphologically diverse, enabling the recognition of a highly distinctive group here referred to as the “linear‐leaved Dracaena complex” which includes species with leaves that are grass‐like with ratios of blade length to maximum width > 10.
Pui Kiat Hoo, Sin Yeng Wong, Khoon Meng Wong   +2 more
wiley   +1 more source

Discordant bodies of postcumulis, ultramafic rock in the upper critical zone of the Bushveld complex : iron-rich ultramafic pegmatite bodies at Amandelbult and the Driekop platiniferous ultramafic pipe

, 1986
From the abstract: In the layered sequence of the Bushveld Complex a number of distinct, but possibly genetically related groups of transgressive, postcumulus, ultramafic and mafic rock are recognised. The main part of this thesis investigates a suite of
Scoon, Roger N
core  

Mg isotope fractionation during continental weathering and low temperature carbonation of ultramafic rocks

, 2019
The Mg-isotope systematics of peridotite weathering and low-temperature carbonation have not yet been thoroughly investigated, despite their potential to provide insights into reaction pathways and mechanisms of lithosphere-hydrosphere transfer of Mg and
Beinlich, A., Oskierski, Hans, C, Dlugogorski, B.Z., Altarawneh, M., Beinlich, Andreas, Dlugogorski, Bogdan Z., Dlugogorski, Bogdan, Z, Mavromatis, V., Oskierski, H.C., Altarawneh, Mohammednoor, Mavromatis, Vasileios, Oskierski, Hans C.   +11 more
core   +1 more source

Mafic and Ultramafic Rock Association in the East Arc of Sulawesi

Journal of Mathematical and Fundamental Sciences, 2019
Busur Timur Sulawesi, yang terdiri dari Sulawesi Timur dan Tenggara, sebagian besar ditempati oleh suatu komplek luas terdiri dari kelompok batuan ultramafic yang diperkirakan berumur Mososoik hingga Tersier Bawah.
R. Soeria Atmadja, J.P. Golightly, B.N. Wahju   +2 more
doaj