0 an interruption in the series of the earth's rock layers, resulting from either erosion (= gradual loss by the effect of weather) or the failure of layers to be created -- （地表岩层的）不整合
It is situated 70 m above the unconformity.
Unconformity and the tuff layer is estimated to be a few hundreds of metres (section is only partially exposed).
Such a major unconformity changed the depositional profile considerably.
Some smaller cavities, or larger cavities with restricted access to the unconformity, were apparently filled by sediment that trickled down into the fissure system.
This suggests that this unconformity may be of regional extent.
The angular unconformity below this flow attests to a period of erosion during which the older succession was worn down to form a seaward palaeoslope.
The unconformity is irregular, but dolomitization clearly extends both above and below it.
Amphibolites from the unconformity (site 2) have only poorly stable magnetizations.
