Mark Tringham

Retired petroleum geologist

South Shnongrim Ridge and the Um Thloo Cave System Sielkan/Sakwa and the Pielkhlieng Pouk Cave System Includes expedition reports from 2000 to 2004 plus an extended report covering the early years of 1992 and 1994, followed by chapters on history, culture, geology and cave swiftlets. About 150 pages are dedicated to the cave inventory including cav...

Meghalaya (NW India) is one of the regions in the world with highest recorded rainfalls. Because of these peculiar climatic conditions and intense solutional weathering, karstic caves are widely reported in the numerous limestone areas of this part of India. Likewise, the extremely high rainfall and the tropical monsoon climate have fostered the fo...

In February 2019 a troglomorphic fish was discovered in a cave in Meghalaya in northeastern India. The largest individual seen in the cave was in excess of 400mm in standard length making it, by far, the largest known subterranean fish found to date. Initial investigations indicate it is a close anatomical match to Tor putitora but differs in its d...

A cave inventory covering the northern part of Nongkhlieh Ridge and the caves connected to the Liat Prah Cave System - the longest cave on the Indian Subcontinent. General chapters, Geography, Geology, Surveying, Expedition Reports, Cave Surveys and Descriptions, Photos. Indexes. Additional: DVD with cave surveys and movies.

A cave inventory covering the Jaintia Hills District, Meghalaya, NE-India. With Geology, Geography, Biology chapters, expedition reports, cave surveys and documentation. Appendix with register and glossaries. Hardback, 265 Pages, colour Photos and graphs

An investigation has been made of a structural complex in southwest Wales. The complex comprises a zone of folds and faults within Upper Carboniferous rocks of the Variscan fold belt, interpreted to have formed by tectonic deformation of a large channel sandstone. Sedimentary features include basal and internal erosion surfaces, an onlapping channe...

The discovery of Otter Hole between 1973 and 1976 and the investigations that have followed prove the existence of a previously unsuspected extensive and well-developed karst region between the Forest of Dean and the main limestone outcrops rimming the Coalfield. Apart from being a sizeable cave mainly kilometres from any comparable system, Otter H...

Includes a detailed structural map and synoptic profile of SW Dyfed. The structural zonation of the region is reviewed and structure within each zone described, as are the major strike faults of the region. There is discussion of various aspects of the area including the interaction of Caledonian and Variscan structures and the location of the Vari...

Palaeozoic rocks in the Variscan domain of SW Dyfed, Wales, were deformed under anchimetamorphic conditions during the late Carboniferous. Within the Pembrokeshire Coalfield a 1 km wide zone of conjugate folds and thrusts, external to the northern limit of slaty cleavage, is used to define the Variscan orogenic front. South of the front there is a...

Discovered in l974, Otter Hole was explored up to a final length of 3.2 km during the following 2 years. Some of the most impressive speleothems in Britian were found. Dye-tests have established a catchment area of swallets draining from the Old Red Sandstone into the Carboniferous Limestone north of Chepstow. An upper abandoned series of phreatic...