نتایج جستجو برای: diabasic dikes
تعداد نتایج: 976 فیلتر نتایج به سال:
Geological, petrological, and axygcn isotopic data are pn:sentecl for 228 whole rock and mineral samples collected from a 100x20 km area of the nortbem Samail opbiolite in Oman. MOlt of these samples arc from three detailed profiles tluough the pillow IIIYBI, sbeetecl dikes, and .red pbbi'OI of this laterally heterogeneous fratpnent of Cretaceous oceanic crust, down to and 8C1'0I& the petroaop:...
Dike health inspection is crucial in river channel regulating. The conventional manual collapse inefficient and costly so that the unmanned aerial vehicle (UAV)-based has been widely applied. However, existing vision-based defect detection methods face challenges, such as lack of sample data closed specified sets. To address them, a method based on improved YOLOv5 recognition combined with imag...
Introduction: The GRAIL (Gravity Recovery and Interior Laboratory [1]) mission has enabled unprecedented views of the lunar crust and interior structure. Indeed, the data solutions now resolve gravity anomalies arising from lateral heterogeneities within the crust globally at scales < 10 km[2,3]. Intrusive magmatic features such as dikes and sills are predicted to be prevalent within the lunar ...
The Beemerville alkaline complex, New Jersey, occurs at the western end of the CortlandtBeemerville magmatic belt. The eastern end of the belt is defined by the Cortlandt complex, New York, which largely consists of ultramafic and mafic rocks. Between these two intrusive centers is a linear almost east-west trending zone of lamprophyre and felsic dikes. The Beemerville complex consists of two l...
The Triassic Yanchang Formation in the Ordos Basin is one of main exploration targets. Based on detailed outcrop at southern margin Basin, combined with previous results, a systematic analysis lithology, rock assemblage, sedimentary facies characteristics and temporal evolution carried out. results show that Changchang 9 oil-bearing group can be divided into lithofacies types, three types facie...
Understanding the origin of pallasites, stony-iron meteorites made mainly of olivine crystals and FeNi metal, has been a vexing problem since their discovery. Here, we show that pallasite olivines host minute magnetic inclusions that have favorable magnetic recording properties. Our paleointensity measurements indicate strong paleomagnetic fields, suggesting dynamo action in the pallasite paren...
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