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 --
1 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 --
Its relationship to the unconformity is not exposed, but it displays the field and petrological characteristics of this group.
This suggests that this unconformity may be of regional extent.
It is situated 70 m above the unconformity.
The unconformity is best developed at basin margins and on uplifted intrabasinal fault-blocks.
Either way, the basal sandstones and conglomerates were clearly deposited as a shallow marine transgression across a terrestrial unconformity surface.
The hiatus associated with the unconformity is probably of minor magnitude and as such is not reflected by a clear break in the palynological record.
This sample was collected approximately 15 m above the unconformity.
The basal unconformity is undulating and can be traced intermittently for 2-3 km in the southeast outcrops.
