Mr. Berry has expe­ri­ence of map­ping in all envi­ron­ments from trop­i­cal jun­gles to deserts to sub-polar regions, and also in rocks of all types from late Ter­tiary sed­i­ments and vol­canics to Pre­cam­brian igneous and meta­mor­phic rocks.

He has mapped in the field in Zam­bia, the east­ern and west­ern United States, and Aus­tralia. He has done geo­log­i­cal map­ping using remote sens­ing, with lim­ited ground follow-up, in Alge­ria, Aus­tralia, Brazil, Colom­bia, west­ern China, Namibia, Pak­istan, Papua-New Guinea, Yemen and many other countries.

One of Mr. Berry’s areas of spe­cial exper­tise lies in map­ping highly weath­ered ter­rains in humid trop­i­cal envi­ron­ments such as Zam­bia, NE Aus­tralia, the south­ern Appalachi­ans, and cen­tral Brazil. In these areas of min­i­mal out­crop, map­ping often depends on the accu­rate inter­pre­ta­tion of the ‘C” hori­zon or sapro­lite. When the ter­rain is flat it is often nec­es­sary to cre­ate out­crop by means of pit­ting and trenching.

Another area of great inter­est is in map­ping thrust and fold belts such as those of the south­ern Appalachi­ans, the Tien Shan, the Sulaiman and Salt Ranges of Pak­istan, the Mayan ranges of south­ern Mex­ico, the Colom­bian Andes, the Lufil­ian arc of cen­tral Africa and the cor­rel­a­tive Bam­bui fold belt of cen­tral Brasil. In these areas remote sens­ing tech­niques can be of great assis­tance, but the detailed study on the ground of crit­i­cal local­i­ties is often key to under­stand­ing the over­all picture.