川东地区石炭纪的构造褶皱强烈，断裂发育，完整背斜很少，气藏一般赋存在背斜圈闭内。

In eastern Sichuan, Carboniferous strata are intensely folded and faulted, and complete anticlines are rare; so gas pools are generally non-anticlinal traps.

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石炭纪的，石炭系的：(属于或表示)地质上的一个分段，即紧跟着泥盆纪而早于二叠纪的古生代的。

Carboniferous: of, belonging to, or denoting a geologic division of the Paleozoic Era following the Devonian and preceding the Permian.

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由于10分钟左右的好天气，到了10点24分，地球上已经覆盖了石炭纪的大森林，它们的残留物变成了我们的煤。

Thanks to ten minutes or so of balmy weather, by 10:24 the Earth is covered in the great carboniferous forests whose residues give us all our coal, and the first winged insects are evident.

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