与深海相放射虫硅质岩相伴，则夹有玄武岩(细碧岩)层。
Thin basalt (spilite) layers are often interbedded in those deep Marine radiolaria-bearing siliceous rocks.
半深海-深海相区、滨浅海相区和三角洲相区是较为有利的油气分布区。
The bathyal - abyssal facies , littoral facies , neritic facies and delta facies are beneficial to and gas exploration.
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。
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.
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