Category: Science - Earth/Agricultural/Farming
The name Laurentian was given by Logan in 1854 to the great series of rocks forming the Laurentides or Laurentian Mountains, a district of mountainous country rising to the north of the River and Gulf of St. Lawrence, and extending in an unbroken stretch along the shore of the...
_Unconformable rivers._ In considering the course of the lower Housatonic we meet with some difficulty at the outset. In the southern part of the town of New Milford the river l...
7. Part 7_Abandoned gaps._ Many abandoned water-gaps must exist among the hills of the state. Cook’s Gap, through which the New York and New England Railroad crosses the trap ridge, thre...
3. Part 3Apatite forms short and stout crystals always filled with inclusions of liquids. The opaque ore grains, judging by their ready solubility, belong to magnetite. The groundmass of...
4. Part 4The iron and manganese thus chemically precipitated may be deposited either with mechanical sediments, such as sand, clay etc., or without them. If the deposition of mechanical...
8. Part 8Accurate measurements of the vertical intervals between well defined beaches at many localities would enable one to identify special horizons, providing orographic movements wer...
5. Part 5[13] The exact age of the iron and manganese deposits here referred to is, in some cases, a little uncertain. Some may be Cambrian, others Silurian, but the exact determination...
2. Part 2_The Hastings Series._--The stratigraphical relations of the Hastings series have not as yet been satisfactorily determined. The rocks constituting the series differ widely in p...
10. Part 10--Notes on the Lithological Character of some of the Rocks Collected in the Yukon District and Adjacent Northern Portion of British Columbia. 6 pp.--Annual Report, Geol. Sur. of...
9. Part 9The present volume is not confined to the bare presentation of figures of production and consumption of various mineral products, but it treats each individual branch of the min...
1. Part 1The name Laurentian was given by Logan in 1854 to the great series of rocks forming the Laurentides or Laurentian Mountains, a district of mountainous country rising to the nort...
11. Part 11--Sur les Kjokkenmoddings de l’Age de la Pierre et sur la Faune et la Flore Préhistoriques de Danmark. 40 pp., 2 pl. Ill.--Bull. Congrés International d’Archéologie Préhistoriqu...