Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
"Thursday July 14-1910. Blane Lahn.
"Spent the morning collecting some Archaegathinae from the hill northwest of Blane Lahn.
"In the afternoon walked across country following the telegraph line to Bradne Bay. At the southeastern end of the bay much of the basal conglomerate is exposed along the beach but none was seen in contact with the granite. These basal conglomerates are often very coarse grained, the quartz pebbles often 1/4 and some up to 1 inch across. Some are well rounded but most of them are subangular, i.e. the edges are rounded. Much feldspar is present and often pieces of to 3/8 inch across.
"These basal conglomerates are not only considerably cross bedded but have decided dips in several directions in a short space. Evidently it is the material first deposited filling in the holes between the granite hummocks. It is probable that the granite had a level top with depressions eroded somewhere into which the autroic material was first unloaded.
"Saw Scolithus in some of the basal beds and crushed grains and crushed grains
and crushed grains further back in the bay. Instead are in eroded out for 1000 feet and now filled with hard sand.
"Further north (1 1/2 miles) is a northeasterly trending range of ancient mountains. These still stand at least 500 feet higher than the highest Cambic and it was this land against which the Cambic sea marked.
"Some of the hills around Bradne rise to the Archaegathinae zone.