disconformity การใช้

• Within the center of Chuar syncline, this upper contact is a disconformity.
• Following a disconformity the Silurian black slates are laid down 0.4 km thick.
• The contact between the Hatakai Shale and overlying Shinumo Quartzite is a distinct, significant disconformity.
• This is expressed by a disconformity that removed successively deeper reservoir beds to the north and west.
• Within the Unkar Group, the contact between the Hakatai Shale and overlying Shinumo Sandstone is a distinct disconformity.
• This disconformity is sharp and locally truncates cross-bedding and channels exhibited by sandstones in the underlying Hakatai Shale.
• The upper contact of the Kaibab Limestone ( Harrisburg Member ) with the overlying Moenkopi Formation is an erosional unconformity and disconformity.
• As documented by the dating of detrital zircons, this disconformity is estimated to represent a period of about 75 million years.
• The unconformity and disconformity are inferred to represent most of Permian time ( including the Leonardian ) and part of Early Triassic time.
• This disconformity is sharp and locally truncates cross-beds, and channel forms, within the sandstones of the underlying Hatakai Shale.
• The contact between the Cardenas Basalt and the overlying Nankoweap Formation is an erosion surface that is a disconformity or even a slight angular unconformity.
• The upper contact, which is part of the Great Unconformity, of the Sixtymile Formation is a disconformity that laterally becomes an angular unconformity.
• The youngest fauna are Maastrichtian, with an apparent disconformity between the Late Cretaceous and Paleocene, marked by high levels of gamma radiation on logs.
• The third stage is represented by regional uplift, which accompanied the collision of an Avalon terrane with a promontory, and subsequently, developed a regional disconformity.
• Within the Marble Canyon and eastern Grand Canyon regions and south into Verde Valley, upper contact of the Kaibab Limestone with the Moenkopi Formation is an erosional disconformity.
• The upper contact is a disconformity that typically consists of nearly horizontal surfaces with little or no relief and overlain locally by a basal conglomerate within the overlying Redwall Limestone.
• Within the Shinumo Quartzite, a basal lag composed of a layer of conglomerate, which contains basement clasts up to across, lies on the eroded surface that forms this disconformity.
• Within the lower subarkose of the Shinumo Sandstone, a basal lag of conglomerate, which contains basement clasts up to across, lies on the eroded surface that forms this disconformity.
• The upper contact of the Redwall Limestone consists of a deeply eroded disconformity characterized by deeply incised paleovalleys and deep paleokarst depressions that are often filled by sediments of the Surprise Canyon Formation.
• This disconformity is widely assumed to be equivalent to the Hardegsen disconformity of the central European / Southern North Sea Basin, although the age of this disconformity is not constrained as it is in Europe by biostratigraphical indicators