The Gillettes Castle, Connecticut, Basement Drill Core Log. This report provides hand-drawn lithology logs for Gillettes Castle 1800 feet of continuous basement drill core. The core was found to correlate well with the lithologies and fabrics associated with the Honey Hill Fault zone of SE Connecticut and included downward, the Hebron Gneiss in which the well began, the Canterbury Gneiss, the Yantic and Lower Members of the Tatnic Hill Formation, and plagloclase gnelsses, alaskites, and amphlbolltes of the Avalon Terrain. Ubiquitous ductile deformation fabrics and abundant brlttle-ductile and brittle overprinting fabrics characterize the core and complicate llthologic description and interpretation. Connecticut Geological Survey Department of Environmental Protection OFR 1987 01 report is available as a 178 page PDF document. The core is archived at the Connecticut Geological Survey Core Repository. The report and the metadata were provided by the Connecticut Geological Survey, Department of Energy and Environmental Protection and made available for distribution through the National Geothermal Data System.

The report Core Description and Cuttings Description of the 1987 Moodus 4,764 ft Deep Well, OFR-89-1 comprises several summary sections as follows:

1) Summary of logging conventions used in the description of core materials from the 4,764 ft deep well at Moodus, Connecticut; 1,000 ft well at Moodus, Connecticut; and 1,500 ft well at Gillette Castle, Connecticut.

2) Summary of descriptions of core materials from the 1987 Moodus 4,764 ft deep well.

3) Summary log of the Moodus Deep Well

4) Moodus well core description scale 1:1

5) Summary of abbreviations use in the description of cuttings from the 1987 Moodus 4,764 ft well.

6) Description of cutting from the Moodus 4,764 ft well

The resource was provided by the Connecticut Geological Survey, Department of Energy and Environmental Protection and made available for distribution through the National Geothermal Data System.

Citation: Ambers, Clifford, 1989, Core Description and Cuttings Description of the 1987 Moodus 4,764 ft Deep Well, Connecticut: Connecticut Geological and Natural History Survey Open File Report 0F-89-I, 207 p.

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.