EH Field Trip 2 (Lab 11)
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4 terms
Terms | Definitions |
|---|---|
 Tuscarora Formation | Early Silurian; light colored sedimentary rock, with well- to poorly-rounded sand-sized grains of quartz. Usually signals moderate energy depositional environment (e.g. large river). |
| Juniata Formation | Late Ordovician; dark to light red, clastic sedimentary rod, with well- to poorly-rounded and sand-sized grains of quartz and feldspar. Usually signals moderate energy depositional environment (e.g. large river). |
| Martinsburg Formation | Middle Ordovician; fine-grained, clastic sedimentary rock, usually deposited in quiet water (low energy) environments like lakes or if marine below wave-base |
| Chambersburg Formation | Early-Middle Ordovician; limestone with interbedded thin bands of meta-bentonite and shale |
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