In many areas, for example 1 km south of the Seattle fault zone on line PS-2, a reflection from the Tertiary-Quaternary angular unconformity is observed. At the south end of both lines, strong ...

Sequence stratigraphy is a branch of geology that studies the spatial and temporal relationships of sedimentary rocks and their depositional environments. It helps to reconstruct the history of ...

Angular Unconformity of the Late Quaternary Strata in the Hetao Basin ... Institute of Geology, China Earthquake Administration, Beijing, China; 2 National Institute ... The fault activity in the ...

This week's Friday Field Foto is from an area just west of Death Valley called Darwin Canyon. As you can see, there is a sharp, angular contact between two sedimentary formations -- an angular ...

This week’s Friday Field Photo is another one from a recent trip to the Spanish Pyrenees. What do you see? Although it may not look like much at first glance this outcrop is a nice example of a ...

McDannell: Unconformities are pretty common in the geologic record. And if you think of the geologic record as a book, unconformities could be missing pages in that book. And what's really interesting ...

It was first described in 1788 by James Hutton, the ‘father of geology’, as an example of an angular unconformity – a junction between two sets of rocks of different ages.