کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5782541 | 1413925 | 2017 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The metallogenic evolution in Mexico during the Mesozoic, and its bearing in the Cordillera of Western North America
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
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چکیده انگلیسی
The above configuration of metallogenic events and provinces occurred in response to drastic changes in the general tectonomagmatic regime: from magmatism associated with Jurassic to Albian synvolcanic extensional unroofing (magmatic oceanic realm for ore deposits) to a contractional continental volcanic arc thereafter (magmatic continental-subaerial realm for ore deposits). The transition from these metallogenic magmatic realms occurred between the mid-Aptian and mid-Cenomanian, and Mexico represents the last region in the Cordillera of western North America in which such transition occurred-it was predated by similar processes in Alaska and Canada between the Lower Jurassic and the Middle-Upper Jurassic, and in the southwestern USA between the Middle-Upper Jurassic and the Lower Cretaceous. Such southward and cratonward (eastward) progression was accompanied by orogenic pulses, which overlap in NE Mexico as thin-skinned Sevier structures were followed by thick-skinned Laramide structures, and were largely controlled by flattening of the subducted slabs. Laramide orogenic pulses played a key role in the formation of orogenic gold deposits, but are also responsible for the mobilization of basinal brines that ultimately led to the formation of MVT and red-bed deposits, although several of such deposits might have formed earlier, and others are post-orogenic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ore Geology Reviews - Volume 81, Part 3, March 2017, Pages 1193-1214
Journal: Ore Geology Reviews - Volume 81, Part 3, March 2017, Pages 1193-1214
نویسندگان
Antoni CamprubÃ,