GEOLEX

Summary of Citation: Meriden

Publication:
Krynine, P.D., 1950, Petrology, stratigraphy, and origin of the
   Triassic sedimentary rocks of Connecticut: Connecticut
   Geological and Natural History Survey Bulletin, no. 73, 248
   p.

Usage in Publication:
Meriden formation

Modifications:	Geologic Province:	Dominant Lithology:
Named	New England province Hartford basin	Siltstone Shale Limestone Sandstone Lava

Summary:
The Meriden formation of the Newark group is named for interbedded sedimentary and basaltic rocks in central Connecticut. It consists of variegated or dark siltstone, shale, limestone, sandstone, and conglomerate and three lava flows. It is divided into the lower lava flow, lower sedimentary division, middle lava flow, upper sedimentary division, and upper lava flow. Overlies the New Haven arkose; underlies the Portland arkose. Age is Late Triassic.

Summary of Citation: Meriden

Publication:
Lehmann, E.P., 1959, The bedrock geology of the Middletown
   quadrangle: Connecticut Geological and Natural History Survey
   Quadrangle Report, no. 8, 40 p.

Usage in Publication:
Meriden Formation

Modifications:	Geologic Province:	Dominant Lithology:
Not used	New England province Hartford basin

Summary:
The term Meriden Formation is not used and its members are given formation rank in the Newark Group as the Talcott Basalt, Shuttle Meadow Formation, Holyoke Basalt, East Berlin Formation, and Hampden Basalt.

Summary of Citation: Meriden

Publication:
Rodgers, John, Gates, R.M. and Rosenfeld, J.L., 1959, Explanatory
   text for preliminary geological map of Connecticut, 1956:
   Connecticut Geological and Natural History Survey Bulletin,
   no. 84, 64 p.

Usage in Publication:
Meriden Formation

Modifications:	Geologic Province:	Dominant Lithology:
Revised	New England province Hartford basin

Summary:
The members of the Meriden Formation are named the Talcott Lava Member, lower sedimentary member, Holyoke Lava Member, upper sedimentary member, and Hampden Lava Member.

Summary of Citation: Meriden

Publication:
Sanders, J.E., 1968, Stratigraphy and primary sedimentary
   structures of fine-grained, well-bedded strata, inferred lake
   deposits, Upper Triassic, central and southern Connecticut,
   IN Klein, G.D., ed., Late Paleozoic and Mesozoic continental
   sedimentation in northeastern North America: Geological
   Society of America Special Paper, 106, p. 265-305

Usage in Publication:
Meriden Group

Modifications:	Geologic Province:	Dominant Lithology:
Revised	New England province Hartford basin

Summary:
The Meriden is raised to Meriden Group and it includes the Talcott Formation, Shuttle Meadow Formation, Holyoke Basalt, East Berlin Formation, and Hampden Basalt. The term Newark Group is not used.

Summary of Citation: Meriden

Publication:
Rodgers, John, 1985, Bedrock geological map of Connecticut:
   Connecticut Geological and Natural History Survey, scale
   1:125,000

Usage in Publication:
Meriden Formation

Modifications:	Geologic Province:	Dominant Lithology:
Revised	New England province Hartford basin

Summary:
Meriden Formation of Krynine (1950) is used as an equivalent to the Talcott, Shuttle Meadow, Holyoke, East Berlin, and Hampden Formations on the bedrock geologic map of Connecticut. Age is Early Jurassic.