1. Report from the British Group, M.M.Sweeting

2. Plan of the Czechoslovak Working Group, Vojen Lozek

3. Karst map of former USSR, Translated by Yuan Daoxian

4. Karst and caves in Canada, D.C.Ford

5. Report of the Hungarian Working Group IGCP 299, Denes Balazs

6. Typical karst area - Skocjanske Jame (Slovenia, May , 1992) Andrej KRANJC

7. Typical karst area - Skocjanske Jame (Slovenia, Sept. , 1992) Andrej KRANJC

IV. RECENT RESEARCH BY IGCP 299 PARTICIPANTS

IV₁ WORLD KARST CORRELATION

1.Distribution of the karst in Perm region, K.A.Gorbunova

2.The South-east karst province of South Australia, K.G.Grimes

3.Analysis of the karst massif structural elements development
   for engineering karstology, V.N.Kataev

4.The geomorphological significance of the newly defined "Daly Point" and "Davis Point"
   on coral reel formation and distribution in the world, HORI,Nobuyuki

5.Geographical variations of growth rates of speleothems and its climatic
   geomorphological significance,ARAKAWA Tatsuhiko et.al

IV₂ MECHANISM OF KARST PROCESS

1.Carbon uptake in aquatic plants deduced from their natural ¹³C and ¹⁴C content,
Elena marcenko et.al

2.Replacement mechanisms among carbonates, sulfates, and silica in karst regions:
some Appalachian examples, Arthur N.Palmer and Margaret V.Palmer

3.Spectra of Luminescence of cave minerals, Shopov Y.Y

4.Genesis and mineralization of two Himalayan caves, Shopov Y.Y. et.al

5.Speleogenesis in aeolian calcarenite: a case study in Western Victoria, Susan White

IV₃ ENVIRONMENT PROBLEMS IN KARST REGION

1.Radon hazard in caves: a monitoring and management strategy.     R G Lyons

2.Prediction of hazardous events in karst areas as a result of anthropogenic changes
   in the hydrogeologic environment.    V.M.Kutepov and V.N.Kozhevnikova

3.The influence of karst hydrology on water quality management in the South East
   of South Australia, A.J.Emmett et al.

4.Groundwater and the rehabilitation of Nauru, G.Jacobson and P.J.Hill

5.Surface hydrology and soil erosion in an arid karst: the Nullarbor Plain, Gillieson David et al.

IV₄ PALAEOENVIRONMENT RECONSTRUCTION WITH KARST RECORDS

1.Travertine-marl: the "Doughnut-Hole" of karst, David A.Hubbard et al.

2.Modification of preglacial caves by glacial meltwater invasion in East-Central New York, Paul A.Rubin

3.Young age bias of radiocarbon dates in Pre-Holocene marine deposits of Hong Kong
   and implications for Pleistocene stratigraphy, W.W.S.Yim, et al.

4.Origin of reef lagoon: the drowned karst topography and palaeoclimate, Nobyuki HORI

5.The growth rings of speleothems,Late Quaternary climatic changes and the estimate
   of its related relative solution rate of limestone, ARAKAWA,Tatsuhiko et al.

6.The ages of one cycle of cave developments in a subtropical raised coral reef area:
   Yoron Island, the Ryukyus, Japan ARAKAWA,Tatsuhiko et al.

7.Glacial to Holocene changes in carbonate and clay sedimentation in the Equatorial
   Pacific Ocean estimated from thorium 230 profiles, Yong-Liang Yang et al.

8.A high-resolution record of Holocene climate change in speleothem calcite
   from cold water cave, Northeast Iowa Jeffrey A.Dorale, Luis A.Gonzalez et al.

9.Karst cave stromatolites (KCS), Wang Fuxing & Cao Jianhua

IV₅ KARST RESEARCH TECHNIQUES

1.Techniques for estimating recharge to a karstic aquifer: Naracoorte Ranges,
   South Australia. F.W.J.Leaney et al.

2.Identification and separation of water-tracing dyes using pH response characteristics. Ruth G.Lyons

3.Special problems of groundwater monitoring in karst terranes. James F.Quinlan

4.The application of the biological detection and ranging method
   for karst mass mapping. Ivanovskiy O.T. et al.

5.U-series dating of last interglacial high sea stands: Barbados Revisited. Teh-Lung Ku et al.

6.The geomorphological analysis of the curved axis of a speleothem:
   for example from Miyako-Jima Island, the Ryukyus, Japan. HORI,Nobuyuki et al.

7.The prolonged minima and maxima of solar activity V.N.Dermendijev et al.

IV₆ NEW DEVELOPMENT IN KARST RESEARCH IN THE FORMER USSR Yuan Daoxian

V. MEETING ANNOUNCEMENT, 1994

VI. NEW MEMBERS AND NEW ADDRESS FOR MEMBERS