On the occurrence of a solid hydrocarbon in the eruptive rocks of New Jersey

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1878
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Abstract
IN an article by T. Sterry Hunt, published in this Joul'l1al in 1863, '" mention is made OT an interesting locality at Cape Gaspe where a trap dike intersects the sedimentary rocks.The cavities in the trap are frequently lined with chalcedony, or with crystals of calcite or quartz, and filled with petroleum which in some cases has assumed the hal'dness of p~tch.Recentl.Y our attention was called to a newspaper account of the occurrence of mineral oil in the lava of Mt.Etna.The numerous round or inegular cavities contained in the lava are described as being coated with aragonite and filled with mineraloil.An analogous instance in our own country has been familiar to me for some time, which, taken in connection with the occurrences mentioned above, seems to be of sufficient interest to be worth recOI'ding, Associated with the sheet of trap rock known as the First Newark Mountain, which traverses the central portion of the Triassic formation of N ew Jersey, there occurs near Plainfield, at an abandoned copper mine on the western slope of the mountain-the uppel' surface of the trap sheet--an amygdaloid t.rap passing into a metamorphosed shale.In this region it is frequently impossible to distinguish ill small exposures, the genuine tl'ap from the metamorphosed shales that rest in contact with it.tMan'y of the cavities in the amygdaloidal rock are filled with a bl'il1iant jet black cal'bonaceous mineral resem bling very closel'y the albertite of New Brunswick.tThese cavities are fl'equently tubular in shape, having a length of three or four inches and usually a diameter of about a quarter of an inch.Sometimes these tubes were lined throughout by infiltration, with a coating of qUl1rtz or calcite a line or -X-Vol.xxxv, p. 166, 186~.
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Authors I. C. Russell
Journal american journal of science
Year 1878
DOI
10.2475/ajs.s3-16.92.112
URL
https://doi.org/10.2475/ajs.s3-16.92.112
Keywords Keywords not found

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