The tuffaceous blanketed the entire basin.
凝灰岩充填着整个盆地。
It was found that Meiyuan stone is a tuffaceous sandstone of high porosity.
通过岩矿检测，得知梅园石属于凝灰质砂岩，孔隙率较大。
They reported the abnormal uranium content of waters issuing from tuffaceous rocks.
该理论认为，来自凝灰岩的地下水淋蚀铀。
Oil shale always has the accompanying relationship with overlying sedimentary tuff or other tuffaceous strata.
油页岩常与上覆沉凝灰岩或其它凝灰质岩石呈伴生关系。
The types of reservoirs main include base rock weathering crust, sandstone, tuffaceous sandstone and conglomerate.
储层类型主要包括基岩风化壳、砂岩、凝灰质砂岩和砾岩。
The types of reservoirs main include base rock weathering crust, sandstone, tuffaceous sandstone and conglomerate.
储层类型主要包括基岩风化壳、岩、灰质砂岩和砾岩。
The eruptive tuffaceous volcanic has been mainly changed by leaching, and become loose and porous, with the porosity to be increased to over 15%.
淋滤作用主要改造爆发相凝灰质熔岩，使其变得极为疏松，孔隙度提高到15 %以上。
Bao ancient group plans for a major deep-sea - a half deep in the ash, black ash-like TLC tuffaceous siltstone, shale tuffaceous, with gray green, with thin gray-tuff interbedded uneven.
包古图组主要为一套深海—半深海相的灰、灰黑色薄层状凝灰质粉砂岩、凝灰质泥岩，与灰绿色、灰色薄层状沉凝灰岩不均匀互层。
Bao ancient group plans for a major deep-sea - a half deep in the ash, black ash-like TLC tuffaceous siltstone, shale tuffaceous, with gray green, with thin gray-tuff interbedded uneven.
包古图组主要为一套深海—半深海相的灰、灰黑色薄层状凝灰质粉砂岩、凝灰质泥岩，与灰绿色、灰色薄层状沉凝灰岩不均匀互层。
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