Well name

Drilling depth (m)

lithology

Seismic facies

remarks

A

344

Granite

Acidic igneous intrusions

B

1010

Mainly rhyolite, andesite, tuff, etc.

The centrally erupted eruptive rocks flow down from the top of the volcanic crater, forming volcanic deposits with thin tops and thick wings. They have multiple stages, with obvious lithological interfaces and large-scale flaky distribution.

The shape is distributed in a larger scale (The distribution range of volcanic deposits is closely related to ancient landforms)

C

7

Igneous rock

Messy reflection, weak amplitude, poor stratification.

There are upward diverging magma channels, which are associated with faults.