Geobulletin alpha

Source info:

Author:
Date:	2014-11-22 17:13:29
Blog:	Mountain Beltway
URL:	http://blogs.agu.org/mountainbeltway/2014/11/22/stylolites-helderberg-crinoidal-grainstones-corridor-h/

Summary:

Long week, no blog. But, hey – it’s Saturday, and I have a couple of hours of breathing room – so here are some stylolites in a crinoidal grainstrone in the New Creek member of the Helderberg Formation, exposed on Corridor H in West Virginia. Stylolites are pressure solution features, which overall form perpendicular to the maximum squeezing direction (maximum principal stress direction, σ1), and have little wiggle peaks that …

Content analysis:

Stratigraphic context:

Recognized stratigraphic terms [n]:	Helderberg Formation [1]
Agenames chronostratigraphy [rating]:	[0.1] Lower Devonian [0.1] Devonian [0.1] Silurian [0.1] Paleozoic [0.5] Phanerozoic [0.5]

Geographic context:

Location	Country	Latitude	Longitude
West Virginia	US	38.9197	-80.1817
New Creek	US	39.3842	-79.0212
Helderberg	US	42.6513	-73.7943

Keywords:

breathing room, Corridor H Long, couple, crinoidal grainstrone, echinoderms, Helderberg crinoidal grainstones, Helderberg Formation, little wiggle peaks, maximum principal stress, maximum squeezing direction, New Creek member, pressure solution features, Saturday, stylolites, West Virginia