It was found to be seldom possible to do accurate and close geological mapping, owing to the limited time that was available for work ashore. Maps of the areas had to be made, as those of the Admiralty are of too small a scale to do more than provide a skeleton upon which the larger scale sketches can be based. The sketches were generally the result of a rapid reconnaissance with plane table or compass and pace, or in some cases simply a freehand sketch from the summit of a ridge.

Wherever possible hand specimens were collected and the general geological associations noted.

The order in which the following islands are described is not that in which they were visited, but they are grouped as follows:

Islands of the Southern Ocean{ South Georgia (68)
{ Elephant Island (1)
{ Zavodovski, South Sandwich Gp. (0)
Islands of the South Atlantic Ocean
{ Gough Island (5)
{ Tristan da Cunha (2½)
{ Nightingale (1)
{ Middle (1)
{ Stoltenhoff (0)
{ Inaccessible (1)
Islands of the Mid-Atlantic
{ St. Paul’s Rocks (½)
{ Saõ Miguel Açores, St. Vincent
{ (Cape Verdes) (3)
{ Ascension (3)
{ St. Helena (1)
(The numbers in brackets refer to the days spent ashore.)

ISLANDS OF THE SOUTHERN OCEAN

South Georgia.—Lat. 54° S. Long. 37° W.

Topography

This island is about 116 miles long by 20 miles wide, with the longer axis lying in a general N.W. and S.E. direction. It has the appearance of an upland dissected by cirque recession and enlargement. The highest peak, Mount Paget, which is an isolated remnant of the upland, is about 8,000 feet high.