内蒙西部银根-额济纳盆地群是在 前古生代基底上发育起来的中、新生代“叠 置型”盆地群。
Yingen-Ejina Basins in the west of Nei Mongol is shown by superposition of Mesozoic and Cainozoic on basement of pre-Palaeozoic constitutes.
盆地周围为前震旦纪变质岩系及古生代灰岩、页岩组成的高丘、低山。
Of, belonging to, or being the geologic time, system of rocks, and sedimentary deposits of the sixth period of the Paleozoic Era, characterized by the development of coal-bearing rock formations.
下面所列举的是分布于分流和三角洲前绿砂体的油气田的例子，在地质时代上从晚古生代至中新生代。
The following examples of oil and gas fields in distributary and delta- fringe sand bodies range in age from late paleozoic to middle cenozoic.
在晚古生代岛弧带、弧前海沟带、弧后盆地或陆缘活动带等构造环境下发育有不同的火山岩组合。
Under the tectonic backgrounds of island arc belt, fore - arc trench belt, back - arc basin, and epicontinental active belt of late Paleozoic, it has different volcanic rock characteristics.
准噶尔盆地是晚古生代以来多期形成的复合叠加前陆盆地。
Zhungaer basin is a composite and superimposed foreland basin since late Paleozoic.
区内下古生界烃源岩经历了两次成油过程，第一次发生在加里东运动前的盆地沉降阶段，第二次发生在加里东运动后晚古生代陆表海沉积阶段。
The first was in the basin subsidence stage that was prior to the Caledonian movement. The second took place in the marginal sea deposition stage after the Caledonian movement.
开合历史分为前震旦纪、古生代和中、新生代三大阶段。
The opening and closing history may involve three major stages: pre-Sinian, Paleozoic and Meso-Cenozoic.
塔西南前陆盆地是古生代克拉通盆地与中、新生代前陆盆地的复合，在剖面上呈向北抬升的箕状结构。
The southwest foreland basins in Tarim Basin is composed of Paleozoic basins and the Meso Cenozoic foreland basins.
它是由晚古生代前陆坳陷和中新生代山前拗陷迭加而成的复合型盆地。
Generally, the basin is a superimposed basin formed by foreland depression of the Late Paleozoic in the lower, and the piedmont depression of the Meso-Cenozoic in the upper.
其成研究区带隶属昆仑成矿省东昆仑前寒武、晚古生代、中生代金铜铅锌铁成矿带。
Metallogenic belt belong to the province of East Kunlun Precambrian, Paleozoic, Mesozoic gold and copper zinc iron ore belt.
古生代是地质时期的一个时代，从前寒武纪末开始，到中生代初，大约从5.7亿年前到2.25亿年前。
An era of geologic time, from the end of the Precambrian to the beginning of the Mesozoic, or from about 570 to about 225 million years ago.
中生代是地质时期的第二个大时代，从大约2.25亿年前的古生代末延续到约7千亿年前的第三纪初。
The second major era of geological time which lasted from the end of the Palaeozoic era about 225 million years ago, to the start of the Tertiary, some 70 million years ago.
中生代是地质时期的第二个大时代，从大约2.25亿年前的古生代末延续到约7千亿年前的第三纪初。
The second major era of geological time which lasted from the end of the Palaeozoic era about 225 million years ago, to the start of the Tertiary, some 70 million years ago.
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