Core Description of the Marmaton and Cherokee Groups
Osborn L.L.C. - Layne Energy Rose Hill #1-6 Well
(sec. 6-T.16S.-R.24E.) Miami County Kansas

Open-File Report 2004-24

Troy A. Johnson, Kansas Geological Survey


The Osborn L.L.C.-Layne Energy Rose Hill #1-6 core (sec. 6- T.16S.-R.24E.; Miami County, Kansas) was drilled in late April 2002. Coal core samples were collected for desorption by the Kansas Geological Survey. A core interval spanning most of the Desmoinesian section (Cherokee and Marmaton groups) was lithologically and sedimentologically described and photographed.


The Osborn L.L.C.-Layne Energy Rose Hill #1-6 well in S2 NE NW sec. 6-T.16S.-R.24E. (Miami County, Kansas) was drilled in late April 2002. Core was obtained through a continuous wireline drilling operation by Layne Energy, Canada. Coal core samples were collected for desorption analysis as part of an ongoing coalbed gas research program at the Kansas Geological Survey. Results of coal sample desorption for the Rose Hill #1-6 well are available in Kansas Geological Survey Open File Report 2004-23 (Newell et al., 2004). Remaining core was measured and marked on site, and then stored in wooden boxes for transport and storage at the Kansas Geological Survey.

Core was reboxed into smaller cardboard boxes, lithologically and sedimentologically described, and digitally photographed at the Kansas Geological Survey during the fall and winter of 2003-2004. Prior to description, decanistered coal desorption samples were returned to their correct stratigraphic position and orientation within the continuous core. Core descriptions and unit tops were tied into the accompanying gamma ray-compensated neutron-density/compensated density porosity log, and were utilized in a regional study of the stratigraphy and coalbed gas potential of the Bourbon arch in eastern Kansas (Johnson, in press).

Core Description

Most of the Desmoinesian section (Cherokee and Marmaton groups) was lithologically and sedimentologically described. A total length of 536 feet of the Rose Hill #1-6 core—from just above the Altamont Limestone Formation to just below the Pennsylvanian-Mississippian boundary—was described (from 520 feet depth to total core depth [TD] of 1056 feet). Limestone and sandstone intervals, and shales intervals to a lesser extent, were slabbed and polished for more detailed description. Friable underclays and fissile shales were placed into cardboard tubes and impregnated with transparent plastic resin prior to slabbing.

Core was systematically described based on thickness, wet color, lithologic characteristics (lithology, average grain size, sorting, and roundness), distinctive composition (e.g. micaceousness), sedimentary structures and bedding features, nature of overlying and underlying contacts, body and trace fossils, and post-depositional and/or diagenetic features. Important stratigraphic surfaces (e.g. sequence boundaries and flooding surfaces) and lithofacies, used for lithologic and depositional interpretations in Johnson (in press), are included in addition to lithologic description.

Data Presentation

The Kansas Geological Survey does not guarantee this document to be free from errors or inaccuracies and disclaims any responsibility or liability for interpretations based on data used in the production of the document or decisions based thereon. This report is intended to make results of research available at the earliest possible date, but is not intended to constitute final or formal publication.

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Updated July 2004