ascetic
发表于 2025-3-23 11:56:06
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白杨鱼
发表于 2025-3-23 17:38:08
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阉割
发表于 2025-3-23 19:58:02
A Geochemical Reconnaissance of the Roseland Anorthosite Complex, Virginia, and Comparisons with And of similar age (~1000-1160 Ma) and setting found in the Grenville Province of Quebec (Fig. 1). Indeed, more than 50 years ago, Ross (1941) drew attention to certain similarities between the titanium deposits associated with the Roseland anorthosite and those found with the St. Urbain anorthosite, Q
一条卷发
发表于 2025-3-24 01:46:58
Basement Tectonic Structures Delineated from Aeromagnetic Survey Data South Eastern Desert, Egyptase angle and horizontal magnetic gradient techniques were applied to aeromagnetic survey data to locate the fault zones. These zones were correlated well with the faults shown on the geologic map. Two main average interfaces at 0.9 and 2.0 km below the survey flight level were calculated through th
强所
发表于 2025-3-24 02:24:38
Appalachians in the Time Interval between the Grenville Orogeny and Variscan Collisionhe northern Appalachians folded and refolded Taconian and Acadian strata are particularly important in concealing Grenville basement, because the level of erosion is relatively high. In the south, strips of Grenvillian rocks extend parallel to the orogenic trend, suggesting their separation by post-
失败主义者
发表于 2025-3-24 10:12:38
Geodynamics of the Early Precambrian: Evidence for the Baltic Shieldwas essential different from the plate tectonics. The main structural provinces were: (1) huge extensional areas with the mantle-derived magmatism in volcanosedimentary belts among more ancient sialic crust (granite-greenstone terranes in the Archean and cratons in the early Paleoproterozoic), (2) c
使成波状
发表于 2025-3-24 11:54:35
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提炼
发表于 2025-3-24 18:44:29
Paleomagnetism of the Boot-Phantom Pluton and the Amalgamation of the Juvenile Domains in the Paleopnorthern Saskatchewan. It contains several petrologic phases ranging from gabbro to tonalite. It is massive and unmetamorphosed, the youngest major pluton in the collage, and it was emplaced at 1838 Ma into low-grade metamorphic rocks. Paleomagnetic analyses using alternating field and thermal step
Ceremony
发表于 2025-3-24 19:07:31
Dengying Formation Gas System of the Sichuan Basin, Southwest China: Model for Precambrian Indigenouthis system is both sourced and reservoired in rocks of the Dengying Formation of Late Sinian age. The source rocks, dominated by micrite and dolomite, are sapropelic and have evolved in most regions to the overmature, dry gas stage. The peak of the natural gas generation occurred at the end of the
纬线
发表于 2025-3-25 01:57:10
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