. Maryland geological survey. ons were still appear-ing, there arose an interesting discussion regarding the age and originof certain clay lenses found at various places near tide level under oneof the lower terraces of the Columbia group. These lenses have beenfound to contain vegetable remains such as cypress-stumps, logs, roots,twigs, seeds, cones, leaves, etc., and animal remains including insect andinvertebrate fossils, the latter found especially at Wailes Bluff near themouth of the Potomac and at Langleys Bluff five miles south of CedarPoint on the Bay shore. These last two localities w
. Maryland geological survey. ons were still appear-ing, there arose an interesting discussion regarding the age and originof certain clay lenses found at various places near tide level under oneof the lower terraces of the Columbia group. These lenses have beenfound to contain vegetable remains such as cypress-stumps, logs, roots,twigs, seeds, cones, leaves, etc., and animal remains including insect andinvertebrate fossils, the latter found especially at Wailes Bluff near themouth of the Potomac and at Langleys Bluff five miles south of CedarPoint on the Bay shore. These last two localities were mentioned anddescribed long ago by Conrad. Mr. A. Bibbins, from the examination ofone of these clay deposits carrying cypress-stumps, near Bodkin Pointat the mouth of the Patapsco river, concluded that they were Raxitan inage. Dr. Philip E. Uhler, after examining a number of similar depositsfarther up the Patapsco river near the head of Baltimore harbor, con- MARYLAND GEOLOGICAL SURVEY. PLIOCENE AND PLEISTOCENE, PLATE Fig. i.—view showing sunderland terrace with lafayette formation in theforeground, elkton, cecil county.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpaleont, bookyear1901
