Contrasting geochemical signatures between Upper Triassic Mo-hosting and barren granitoids in the central segment of the South Qinling orogenic belt, central China: Implications for Mo exploration

Xiao, Bing; Li, Qiugen; He, Shuchang; Chen, Xu; Liu, Shuwen; Wang, Zongqi; Xu, Xueyi; Chen, Junlu

doi:10.1016/j.oregeorev.2016.06.006

Cited by 14 publications

(2 citation statements)

References 65 publications

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“…Buffetaut et al [343] reviewed these materials and argued that the type species S. weiyuanensis is a nomen dubium and S. fusuiensis is actually a spinosaurid. Another species, S. sheziensis , was established on extremely fragmented materials including teeth, incomplete ribs and sacral vertebrae [344], which might be undiagnostic as well. In general, the validity of Sinopliosaurus remains doubtful, and it is difficult to carry out body size estimation due to the poor preservation of fossils.…”

Section: Discussionmentioning

confidence: 99%

Body reconstruction and size estimation of plesiosaurs

Zhao

2024

Preprint

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Body size is the key to understanding many biological properties. Sizes of extinct animals are usually estimated from body reconstructions since their masses can not be weighed directly. Plesiosaurs were Mesozoic marine reptiles that were diverse in both body plan and size. Attempts to estimate body masses of plesiosaurs were rare in the past two centuries, possibly due to lack of knowledge about their postcranial anatomy and body shapes in life. The burst of plesiosaur studies in the past two decades has greatly expanded our cognition of their physiology, taxonomy, potential behavior and even soft body outlines. Here I present a comprehensive review of relevant knowledge, and propose a uniform set of methodology for rigorous body reconstruction of plesiosaurs. Twenty-two plesiosaur models were constructed under these criteria, and they were subsequently used as samples to find proxies for body mass. It is revealed that multiple skeletal elements are good indicators of plesiosaur size. This study offers scaling equations for size estimation, enabling quick acquisition of body mass information from fragmented fossils. A summary of body size evolution of different plesiosaur clades is also provided.

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Section: Discussionmentioning

confidence: 99%

Body reconstruction and size estimation of plesiosaurs

Zhao

2024

Preprint

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“…Ore deposits associated with chemically evolved igneous rock suites have been the intense focus of research over the past several decades [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Magmatic-associated mineral deposits are mineralogically and chemically diverse, occur in a range of geological settings, and have long been the target of the mineral industry.…”

Section: Introductionmentioning

confidence: 99%

Rare Earth Elements in Planetary Crusts: Insights from Chemically Evolved Igneous Suites on Earth and the Moon

McLeod

Shaulis

2018

Minerals

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The abundance of the rare earth elements (REEs) in Earth’s crust has become the intense focus of study in recent years due to the increasing societal demand for REEs, their increasing utilization in modern-day technology, and the geopolitics associated with their global distribution. Within the context of chemically evolved igneous suites, 122 REE deposits have been identified as being associated with intrusive dike, granitic pegmatites, carbonatites, and alkaline igneous rocks, including A-type granites and undersaturated rocks. These REE resource minerals are not unlimited and with a 5–10% growth in global demand for REEs per annum, consideration of other potential REE sources and their geological and chemical associations is warranted. The Earth’s moon is a planetary object that underwent silicate-metal differentiation early during its history. Following ~99% solidification of a primordial lunar magma ocean, residual liquids were enriched in potassium, REE, and phosphorus (KREEP). While this reservoir has not been directly sampled, its chemical signature has been identified in several lunar lithologies and the Procellarum KREEP Terrane (PKT) on the lunar nearside has an estimated volume of KREEP-rich lithologies at depth of 2.2 × 108 km3. This reservoir therefore offers a prospective location for future lunar REE exploration. Within the context of chemically evolved lithologies, lunar granites are rare with only 22 samples currently classified as granitic. However, these extraterrestrial granites exhibit chemical affinities to terrestrial A-type granites. On Earth, these anorogenic magmatic systems are hosts to U-Th-REE-ore deposits and while to date only U-Th regions of enrichment on the lunar surface have been identified, future exploration of the lunar surface and interior may yet reveal U-Th-REE regions associated with the distribution of these chemically distinct, evolved lithologies.

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Porphyry–Skarn Mo Systems

Yang

et al. 2022

Modern Approaches in Solid Earth Sciences

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Contrasting geochemical signatures between Upper Triassic Mo-hosting and barren granitoids in the central segment of the South Qinling orogenic belt, central China: Implications for Mo exploration

Cited by 14 publications

References 65 publications

Body reconstruction and size estimation of plesiosaurs

Body reconstruction and size estimation of plesiosaurs

Rare Earth Elements in Planetary Crusts: Insights from Chemically Evolved Igneous Suites on Earth and the Moon

Porphyry–Skarn Mo Systems

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