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GROTTE DELLA TREMEZZINA: UN'AGGIUNTA

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Natural Disaster Reduction in China 1981年第1期 29-34页

作者： MINABANTI RENATOBANTI MASSIMOHACHEN SpeleoClub《I Protei》 Milano Società speleologica Italiana. SpeleoClub《I Protei》 Milano Società speleologica Italiana. SpeleoClub《I Protei》 Milano Società speleologica Italiana.

PREMESSA speleologicamente parlando la Tremezzina, zona carsica per eccellenza, non hacerto bisogno di presentazioni: le prime notizie speleo-storiche risalgono infatti al 1877ad opera del Balbiani che descrive il Bucone, il Buco della Volpe e la Rotella. Studi successivi ad opera del MARIANI (1896), del LAZZARINI (1927), delPRACCHI(1943) ed in particolare di BINI & PRUDENZANO (1971), portano la conoscenza dell'area

关键词： Co Pi GROTTE DELLA TREMEZZINA UN’AGGIUNTA

APPUNTI SULLA MORFOLOGIA DELLA GROTTA MASERA 2213 Lo-Co (Como)

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Natural Disaster Reduction in China 1981年第1期 45-62页

作者： ALFREDOBINI eALBERTOPELLEGRINI GruppoGrotte Milano SEM-CAI Società speleologica Italiana. GruppoGrotte Milano SEM-CAI Società speleologica Italiana.

Some remarks on the morphology of the cave 《Masera》 2213 Lo-Co (Como, Italy) The Masera cave is a temporary overflow spring situated on the eastern side of the western branch ofthe Como Lake. The cave hydrology has already been studied in a previous work (Cappa 1970). Only themorphology and the structure of the cave are considered in the present paper. It appears from the structural analysis that the cave develops mainly along the bedding-planes with adip N 5°E and with a lesser frequency at the junction of groups of joints. The general morphology of the ca-ve is rather uniform because it is a bedding-cave with a quadrangular cross-section. The morphology of de-tails, on the contrary, is very rich with different forms. Among these the most interesting are:— Bedding plane anastomoses and ceiling channels whose genesis is related to breakdown events. The chan-nels are very frequent and cross the ceiling of passages disappeaning into the rock wall.— Underground karren due to water during floods.— Scallops showing the existence of fast flowing water.— Glacial and alluvial deposits which partially filled the cave for long times.— Ripple-marks and other beach features due to flood waters.— Different kinds of dendritic surge marks and erosional rills.— Thin deposits of manganese on pebbles and formations. Sometimes these films are partially eroded. From the morpho-structural analysis some information on the speleogenesis and the recent evolutionof the cave during the Quaternary is obtained. According to the results reported in this paper the Masera cave(m 329 above sea level) appears to be already existing before the occurrence of the Quaternary *** glaciations had a minor influence on the cave morphology.

关键词： Pi La In APPUNTI SULLA MORFOLOGIA DELLA GROTTA MASERA 2213 Lo-Co

APPUNTI SULLA MALACOFAUNA IPOGEA ITALIANA TERRESTRE E DULCIACQUICOLA

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Natural Disaster Reduction in China 1978年第1期 202-216页

作者： ENRICO PEZZOLI SocietàMalacologica Italiana:Società Biogeografica Italiana:Società speleologica ltaliana.Commissione per la Biospeleologia.

L’AMBIENTE SOTTERRANEO1)Le cavità carsiche,le《Grotte》che per la loro struttura rappresen-tano il principale oggetto di iuteresse e di studio dello Speleologo,devonoessere considerate dallo zoologo un semplice mezzo che gli permette dipenetrare più o meno ampiamente e profondamente in un ambiente sotter-raneo e di allargare lo sguardo su popolamenti nuovi e decisamente caratte-ristici.

关键词： Pi APPUNTI SULLA MALACOFAUNA IPOGEA ITALIANA TERRESTRE E DULCIACQUICOLA

ANALISI STATISTICA DELLE PISOLITI DEL 《BUCO DEL CASTELLO》 (1309 Lo-BG)

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Natural Disaster Reduction in China 1981年第1期 3-12页

作者： PAOLO FORTI ALFREDO BINI GruppoGrotte Milano SEM-CAI. Società speleologica Italiana. Istituto Italiano di Speleologia Bologna.

During the exploration of the 《Buco del Castello》 cave (Lornbardia, Italy) several cups withinside a very large number of cave pearls have been found. All these pearls have been tacken off. The statistical analyses showed that there is always a direct relation between the minimum diameter ofthe pearls and the degree of water turbolence inside each cup. Moreover it has been pointed out that an inverse proportion probably has to exist between the numberof the pearls and their external surface.

关键词： Lo-BG ANALISI STATISTICA DELLE PISOLITI DEL BUCO DEL CASTELLO