clastic sediments 中文意思是什麼
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In clastic sediments, particle size is an important factor.
在碎屑沉積物中，顆粒大小是個重要因素。 -
In the early sinian, clastic sediments formed by fluvial and continental glacial actions were developed, while in the late sinian, great thickness of marine carbonate rocks formed by two transgression - regression cycles were developed
早震旦世發育由河流作用與陸地冰川作用形成的陸源碎屑沉積；晚震旦世則發育由兩次臺地盆地臺地的海進海退旋迴形成的巨厚海相碳酸鹽沉積。 -
The palaeogeographic research indicate that the palaeogeographic outline of the study area recorded the evolution from a sedimentary basin in which the shallow - water carbonate platform sediments and deep - water terrigenous clastic submarine fan developed from southeast to northwest and northeast during the late triassic through a submarine sheet - like model composed of deep - water sandy turbidite and fine - grained turbidite during the early jurassic to a terrigenous clastic barrier coast during the middle and late jurassic and finally to the coal - bearing delta sediments during the late cretaceous
古地理分析表明，研究區晚三疊世古地理輪廓是一個從東南向西北和東北方向由淺水碳酸鹽臺地及深水陸層海底扇沉積共同發育的沉積盆地；早中侏羅世，演變成為一個由深水砂質濁積巖和細屑濁積巖組成的水下席狀體沉積；進入中晚侏羅世，其古地理表現為一個陸屑淺海有障壁海岸；到了晚白堊世，研究區表現為以含煤沉積為特徵的三角洲相沉積。 -
Abstract : this paper sums up characteristics of au anomalies within tertiary red clastic beds in a certain area of qinghai province, and points out that au anomalies mainly exist in the middle part of the tertiary strata, that anomalies are most strong in stream sediments, and that au anomalies result from secondary enrichment of au
文摘:對青海某地第三系紅色碎屑巖層中的金異常特徵進行了綜述，指出金異常主要存在於第三系中段巖層中，異常在水系沉積物中強度最大，並認為金異常由次生富集作用形成。
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