Glacial Map Research Articles

Glacial Map of North America

Glacial Map of North America

Glacial Map of North America. Part 1. Map: Western half and Eastern Half. Part 2. Bibliography and Explanatory Notes.Richard Foster Flint

Previous articleNext article No AccessNew Biological BooksGlacial Map of North America. Part 1. Map: Western half and Eastern Half. Part 2. Bibliography and Explanatory Notes. Richard Foster Flint PDFPDF PLUS Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by The Quarterly Review of Biology Volume 21, Number 4Dec., 1946 Published in association with Stony Brook University Article DOIhttps://doi.org/10.1086/395460 PDF download Crossref reports no articles citing this article.

Proposed Glacial Map of North America

Proposed Glacial Map of North America

NOTES ON BOULDER MARKINGS ON MR. KENDALL’S MAP OF THE GLACIER LAKES IN THE CLEVELAND HILLS

Mr. Kendall has accorded me the privilege of marking upon his glacial map of the Cleveland area the results of the researches of the Yorkshire Boulder Committee. As Honorary Secretary I have in my possession the records of the labours all over the county of the members of that Committee and of many other persons who have furnished records and supplied returns. These represent a vast amount of patient work carried on continuously for the last 17 years. During that period many thousands of records have been made, but the facts they represent have only of very recent years begun to fall into line and to establish certain definite principles illustrating the causes of the distribution of glacial erratics in Yorkshire. The Yorkshire Boulder Committee has always been extremely chary of drawing definite conclusions, and has again and again resisted temptations to generalise, but has chosen rather to wait patiently and to go on accumulating facts from year to year. Out of the mass of information accumulated certain conclusions may now, however, very fairly be drawn; conclusions which have for some years past been gradually forcing themselves upon the minds of the Committee, and which each succeeding year’s work seems to further illustrate and support. Mr. Kendall has very kindly suggested that I should accompany the marking of his map with some notes. This I propose to do entirely from the point of view of the Boulder Committee as formed from its records. Of course it must be understood that...

The Glaciation of the Southern part of the Lake-District and the Glacial Origin of the Lake-basins of Cumberland and Westmoreland

Introduction .—In my paper on the “Glaciation of the Northern part of the Lake-district ”*, I endeavoured to show that at the period of maximum glaciation all the main-valley glaciers were more or less confluent, and that thus the country was enveloped in an almost continuous ice-sheet, which moved, in the northern part of the district, mainly from north to south. In PL VII. C is a continuation southwards of the glacial map brought forward in the previous papers; and a few words must first be said about the distribution of ice-scratches south of the great east-and-west watershed of the district and its import†. I. T rend of the I ce-Scratches and its i mport . The first glance at the map (P1. VII. C) shows that, as in the case of the northern part of the district, the general direction of the arrows points to a great system of valley-glaciers more or less confluent with one another. One or two exceptional directions will be mentioned presently. a. Wastdale .—From Scafell Pikes (49)as a centre, there are scratches pointing downwards, from heights above 2500 feet, to the north into Wastdale, and to the south into Eskdale. From the head of Mosedale, beneath the Pillar Mountain (24) ‡ and Red Pike (67), there is a similar series, and from the double valley between Yew-barrow (43) and Middle Fell (42). Upon Buckbarrow (41) there are scratches pointing with the valley at a height of 1250 feet; and at a height of 1600 feet, north of and between Buckbarrow (41)