File:Annual report (1910) (14593116897).jpg

Identifier: annualreport6421910newy (find matches)
Title: Annual report
Year: 1902 (1900s)
Authors: New York State Museum
Subjects: New York State Museum Science Science
Publisher: Albany : University of the State of New York
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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also easily followed as a scarp fromthe crossroad where the limestone appears in contact with theblack, splintery slates northeastward to the railroad. Outcropsoccur along the public road at the north. Everything is concealedsouth of the crossroad at the south. The limestone of this block is of a very dark bluish-gray color.It often shows veinlets and nests of calcite. Fresh surfaces showdarker and more crystalline bunches in a rock of dark gray color.The rock is more crystalline than other members of the Wappingercreek belt. In litholcgy, it often has a strong resemblance tovarieties met with in the Fishkill limestone, notably southeast ofHopewell. No fossils were found. The average strike is aboutn. 6o° e. and the dip 400 s.e. The block forms a distinct topo-graphic feature. THE FISHKILL LIMESTONEThe belt of which this limestone is a part may be traced withsome interruptions from Millerton in the northeastern corner ofDutchess county nearly to the Hudson river. The portion within 2
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GEOLOGY OF THE POUGHKEEPSIE QUADRANGLE JI this quadrangle occurs as a great fault-bounded block north of theFishkill mountains. Northeastward it may be followed up theClove valley, east of which it passes under the mass of schist com-posing Chestnut ridge and reappears in the Dover-Pawling valley. The overlying slate formation has been removed from thisfaulted limestone mass within this quadrangle, which makes it con-venient to discuss the mass as a unit. Boundaries. The northern boundary enters the quadranglefrom the town of Beekman and extends southwestward along theold roadbed of the Clove branch of the Newburgh, Dutchess andConnecticut Railroad to a point about one mile east of old Hopewell,where it intersects a northwest-southeast fault and turns with asharp angle to the northwest. The actual contact of limestone andslate usually can not be seen, but the field relations and obvious faultfeatures approximately determine the course of the boundary.Somewhere south of Arthursburg, th

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