Anne Arundel county . - ?v- I ^ Fig. 2.—view of a pit of the Washington hydraulic pressed brick company, i mile south of harmans. Maryland Geological Survey 113 is no reason for supposing the removal of pre-existing Magothy deposits of the Matawan are rather uniform mixtures of sand, clay,glaueonite, and mica, although the mica is somewhat variable in amount. The region most favorable to the formation of greensand is near theboundary between the Shallow-water and Deep-water zones, i. e., at adepth of about 100 fathoms. The maximum depth is about 900 this certain deduc

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Anne Arundel county . - ?v- I ^ Fig. 2.—view of a pit of the Washington hydraulic pressed brick company, i mile south of harmans. Maryland Geological Survey 113 is no reason for supposing the removal of pre-existing Magothy deposits of the Matawan are rather uniform mixtures of sand, clay,glaueonite, and mica, although the mica is somewhat variable in amount. The region most favorable to the formation of greensand is near theboundary between the Shallow-water and Deep-water zones, i. e., at adepth of about 100 fathoms. The maximum depth is about 900 this certain deductions may be drawn as to the conditions of deposi-tion of the Matawan. namely, that it was laid down under fairly uniformconditions, but too near the shore to furnish ideal conditions for the for-mation of glaueonite. Such a conclusion is borne out by the large amountof lignite sometimes found in the Matawan. It is interesting to note thatin the Matawan at Millersville, Anne Arundel County, a specimen ofDanimara b

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