MARION COUNTY. 99 



1. Brown overlying sands and pebbles 3 feet. 



2. Ferruginous matter 2 inches. 



3. Stratified red and white sands, visible 3 feet. 



These red and white sands have been deposited in thin layers or strata 

 running from one-half to three-fourths of an inch in thickness, but sometimes 

 change to strata having a thickness of six feet. These heavy deposits are, 

 however, more in the form of lenticular masses, and are not in a general way 

 of very extensive duration. In this cut the apparent dip of these beds is 

 towards the northeast. Coming southward along the same line of railway, 

 on the A. Richardson head right, within three miles of the town of Jefferson, 

 a cutting gives a section in which the same material is shown. 



The following is a section of this cutting: 



1. Gravelly ore, with nodules of concretionary ore 2 feet. 



2. Covering of ferruginous matter found overlying No. 3 2 to 6 inches. 



3. Stratified red and white sands and sandy clay, in layers of from one-half 



to three- fourths of an inch, and apparently lying in a horizontal posi- 

 tion, visible 6 feet. 



These beds are also seen at various places lying east and west of the line 

 of railway, and as they occur on the A. D. Duncan and John Kettrell head- 

 rights and in the vicinity of Hughes' Springs, in Cass County, immediately 

 north of the line, as well as in many places in Harrison County to the south, 

 it is probable that they exist over the greater part of the central and western 

 portion of the county. The eastern, or lower lying, portion of the county is to 

 a great extent occupied by the great beds of sands and clays belonging to the 

 lignite bearing beds of Eastern Texas. 



Lying between the Big Cypress and Little Cypress bayous there appears a 

 heavy surface deposit of drift material, consisting of sands, pebbles, and fer- 

 ruginous matter occupying the higher ground, and extensive tracts of a pale 

 yellowish silty sand occupy the regions in close proximity to the bayous. 

 In places the remnants of an orange-brown colored sandy loam, or brick 

 earth, are found overlying a similarly colored sand. 



These loams are the source of the brick making material found throughout 

 the region of East Texas. A considerable extent of this clay loam occurs in 

 the immediate vicinity of the town of Jefferson, on the Urquhart and John 

 Humphries headrights. 



The section through Marion County, so far as yet determined, appears to be: 



1. Brownish sandy loam, or brick earth, scattered irregularly throughout the 



county, but best developed in the neighborhood of Jefferson 2 feet. 



2. Conglomerate and pebbles of quartz, quartzites, and crystalline rocks, rounded 



and water worn; found over the higher regions of the county 



3. Light colored yellowish gray and orange-red sands, containing nodules or con- 



cretions of geode iron ore 30 feet. 



14— geol. 



