冲积扇

The landform on which ancient human activity relic located was interfluvial floodplain on Yongding River Alluvial Fan.

古人类活动遗址所处地貌部位为古永定河冲积扇的河间冲积平原。

Research based on palaeobiology, seismic profile, electrical characteristics, drilling core observation, granularity and trace element data showed that the sedimentary facies type mainly has the alluvial fan, the delta, thelake, the floodplain and volcanic face.

综合古生物、地震剖面、岩性特征、岩心观察、薄片、粒度及微量元素等资料研究表明，沉积相类型主要有冲积扇、三角洲、湖泊、泛滥平原及火山岩相。

Based on the synthetic study of field outcrops, drilling section data, charts drawn in rooms, and data of stratigraphic correlation, the authors propose that the paleogeographic pattern of Ordos Basin was a fan fluvial sedimentary system at Jurassic Fuxian Stage.

在综合研究野外露头、钻井剖面及室内编图、地层对比的基础上，指出鄂尔多斯盆地冲积扇-河流沉积体系是侏罗纪富县期主要的古地理格局，富县期沉积受与古地貌密切相关的五条河谷控制。

The mineral bed belongs to alluvial fans facies subfacies braided river sandy conglomerate type copper mine.

矿床属冲积扇相扇中亚相辫状河流徽相沙砾岩型铜矿

In china, according to sedimentary environment and deposition features, the main continental sedimentation includes alluvial facies, fluvial facies, lacustrine facies and delta facies, which can be subdivided into 15 sedimentary subfacies and 32 sedimentary microfacies.

我国主要陆相沉积相有冲积扇相、河流相、湖泊相、三角洲相，依据沉积环境和沉积特征，进一步可划分为15个亚相和32个微相。

Secondly, through the identification of facies marks and the analysis of sedimentary facies cross sections, alluvial fan, river, fan delta, delta, lake, sublacustrine fan and tempestite sediment environment have been developed in West Chaidam Basin.

其次，通过对相标志的识别和对反映沉积相纵向演化的基干剖面的分析，总结出研究区发育了冲积扇相、河流相、扇三角洲相、三角洲相、湖泊相、湖底扇相以及风暴沉积等沉积相类型。

Five pieces of paleogeographic maps were made out with modern stratigraphic principles and sedimantary system method. It is shown by the maps that in the beginning of the Changzhougou time the Yanshan Region was occupied by alluvial environment with paleoriver flowing northeast, in the middle of the Changzhougou time a transgression changed whole Yanshan Region into shoreline-shallow sea environment gradually, and sedimentary boundary extended so continuously that by the Gaoyuzhuang time it had overpassed far beyond the Yanshan Region.

在缺乏良好等时面的情况下，本文依据现代地层学原理和沉积体系分析法编制了常州沟组初期与中期，串岭沟组初期，大红峪组初期，及高于庄组初期燕山地区的岩相古地理图，示意了燕山地区在长城纪时由冲积扇-河流为主的陆地环境向滨海-浅海环境的演变过程，并揭示了沉积区域不断扩大的趋势，表明常州沟组初期，以蓟县-宽城为轴线发育了冲积相组，海岸线可能在燕山以北，常州沟组中期发生海侵，沉积区扩大至整个燕山地区，大红峪组时海盆范围继续扩大，高于庄组时，沉积边界已远远超出燕山地区。

The first sequence in the lower part is one subaqueous-fan~fan-delta depositional system which was caused by alluvial fan intruding lake basin; the lake transgressive system tract and high-stand system tract each contain one coal-seam group; and thick coal seams develop at the edge of subaqueous fan retrograded by lake transgressive system tract and in the region appropriately covered with water in the fan delta of high-stand system tract.

八道壕组可分为三个三级层序，下部第1层序( Sq1)为冲积扇注入湖盆形成的水下扇-扇三角洲沉积体系，湖侵域和高位域各含一个煤组，湖侵域退积的水下扇边缘和高位域扇三角洲平原都有厚煤层发育。

Fault scarps developed in the alluvial fans range in height from 1 m to 25m and alternate along the strike of the fault zone from northeast-facing to southwest-facing in a left-stepping en-echelon pattern.

冲积扇中的断层陡坎高lm到25m，沿断层带走向左行雁列状断层崖呈现，向NE和SW倾。

If the volcanic clasts were deposited on volcanic slope and/or fluvial plain, they would occur in the 4 faceis mentioned above or in alluvial fan and braid stream. If the volcanic clasts were deposited in lake, they would occur in delta, fandelta, shallow-deep lake, and swamp.

火山物质堆积在火山斜坡以及前方的冲积平原上，往往以火山碎屑岩相或者冲积扇相、辫状河相保存；它们堆积在湖泊中则为三角洲相、扇三角洲相、较深水相和沼泽相。

John Robbins lives with his family in Santa Cruz, California.

约翰罗宾和家人居住在加利福尼亚州的圣克鲁斯县。

The international background is mainly the economic ties among different nations tented to be widen and deepen at the peace and development times.

国际背景主要是和平与发展时代条件下的世界各国经济贸易联系的日益加深。