International Journal of Speleology最新文献_第8页

Cosmogenic nuclide dating of cave sediments in the Eastern Alps and implications for erosion rates 东阿尔卑斯洞穴沉积物的宇宙成因核素测年及其对侵蚀率的影响

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2020-05-01 DOI: 10.5038/1827-806x.49.2.2303

P. Häuselmann, Lukas Plan, P. Pointner, M. Fiebig

{"title":"Cosmogenic nuclide dating of cave sediments in the Eastern Alps and implications for erosion rates","authors":"P. Häuselmann, Lukas Plan, P. Pointner, M. Fiebig","doi":"10.5038/1827-806x.49.2.2303","DOIUrl":"https://doi.org/10.5038/1827-806x.49.2.2303","url":null,"abstract":"Karstic caves are created by water eroding and corroding rocks that can be dissolved. Since both the spring areas of caves (normally at the valley bottom) as well as the recharge is controlled by superficial processes, the morphology of the cave bears strong links to these influences. Lowering of local base levels promotes the development of horizontal phreatic cave passages at progressively lower elevations, resulting in the formation of multi-level karst systems. Upon the next lowering of base level, these upper systems become fossilized, and sediment trapped within them may remain preserved for millions of years. Dating these sediments gives clues regarding the time when the passages were last active, and thus may yield age information for old valley floors. The present paper presents cosmogenic nuclide datings of twelve samples from eight caves in the central part of the Northern Calcareous Alps of Austria. Besides three samples that gave no results, most of the obtained ages are at the Mio-Pliocene boundary or within the Pliocene, as was expected before sampling. No multi-level caves could be sampled at different elevations, thus, the obtained valley deepening rates are averages between the age of sediment deposition and the present-day valley floor. However, the valley deepening rates of 0.12 to 0.21 km/Ma are in accordance to previous findings and corroborate a comparatively slow evolution of base level lowering in the Eastern Alps compared to the fast (Late Quaternary) evolution in the Central and Western Alps.","PeriodicalId":56286,"journal":{"name":"International Journal of Speleology","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42849315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Bubble trail and folia in cenote Zapote, Mexico: petrographic evidence for abiotic precipitation driven by CO2 degassing below the water table 墨西哥萨波特天然井的气泡痕迹和树叶:地下水位以下二氧化碳脱气驱动的非生物降水的岩石学证据

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2020-01-01 DOI: 10.5038/1827-806x.49.3.2344

R. López‐Martínez, F. Gázquez, J. Calaforra, P. Audra, J. Bigot, T. Puig, R. Alcántara-Hernández, Ángel Navarro, P. Crochet, Liliana Corona Martínez, Raquel Daza Brunet

引用次数: 6

Active growth of non-hydrothermal subaqueous and subaerial barite (BaSO4) speleothems in Lechuguilla Cave (New Mexico, USA) 美国新墨西哥州Lechuguilla岩洞非热液水下和陆上重晶石(BaSO4)岩洞的活跃生长

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2020-01-01 DOI: 10.5038/1827-806x.49.1.2280

M. Wisshak, H. Barton, Katey Bender, H. Duchene, Lake City Co Usa PO Box

引用次数: 1

Cave airflow mechanism of a crevice-type cave: A case study from Czechia 裂隙型溶洞气流机制——以捷克为例

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2020-01-01 DOI: 10.5038/1827-806x.49.1.2285

M. Kašing, J. Lenart

引用次数: 3

Survey of Histoplasma capsulatum in bat guano and status of histoplasmosis in Slovenia, Central Europe 斯洛文尼亚和中欧蝙蝠粪中荚膜组织浆体的调查和组织胞浆菌病的现状

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2020-01-01 DOI: 10.5038/1827-806x.49.1.2297

J. Mulec, S. Simčič, T. Kotar, R. Kofol, S. Stopinšek

{"title":"Survey of Histoplasma capsulatum in bat guano and status of histoplasmosis in Slovenia, Central Europe","authors":"J. Mulec, S. Simčič, T. Kotar, R. Kofol, S. Stopinšek","doi":"10.5038/1827-806x.49.1.2297","DOIUrl":"https://doi.org/10.5038/1827-806x.49.1.2297","url":null,"abstract":": There have been increasing reports on the presence of Histoplasma capsulatum in some European countries. The study investigated the presence of Histoplasma in bat guanos, speleologists with records of visiting Histoplasma -endemic regions and patients with histoplasmosis. A commercial ALPHA Histoplasma Antigen enzyme immunoassay was tested as an alternative methodology to detect Histoplasma in environment and compared with polymerase chain reaction (PCR) assays. The presence of Histoplasma antigen in bat guanos was not confirmed by PCR. Among 14 healthy speleologists, two were indicated as having the Histoplasma antigen in urine, but expressed negative PCR-specific results for the Histoplasma antigen. Five unequivocal cases of imported acute pulmonary histoplasmosis in Slovenia between years 2005 and 2016 were confirmed in patients returning from North and South America after visiting hazardous localities e.g., caves with guano, and places with dust. Currently there is no evidence of autochthonous histoplasmosis in Slovenia, or that bat guano is a source of H. capsulatum . Involvement of histoplasmosis in travellers’ and cavers’ morbidity might be underestimated in non-endemic areas. It is crucial to ensure the use of appropriate protective equipment in Histoplasma hazardous localities, to spread information about this hazardous microbe to vulnerable populations and to monitor the health of the environment. A differential diagnosis for a febrile respiratory disease outbreak in patients returning from endemic regions should trigger routine consideration of possible histoplasmosis.","PeriodicalId":56286,"journal":{"name":"International Journal of Speleology","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48590862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Culture dependent analysis of bacterial diversity in Canada’s Raspberry Rising Cave revealed antimicrobial properties 加拿大覆盆子上升洞穴细菌多样性的培养依赖分析揭示了抗菌特性

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2020-01-01 DOI: 10.5038/1827-806x.49.1.2291

Soumya Ghosh, Gabrielle Kam, Monique Nijjer, Christian Stenner, N. Cheeptham

引用次数: 9

Uncertainties associated with the use of erosional cave scallop lengths to calculate stream discharges 与利用侵蚀洞穴扇贝长度计算水流流量有关的不确定性

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2020-01-01 DOI: 10.5038/1827-806x.49.1.2292

Gregory S. Springer, A. Hall

引用次数: 1

Impacts of invasive rats on Hawaiian cave resources 入侵鼠对夏威夷洞穴资源的影响

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2020-01-01 DOI: 10.5038/1827-806x.49.1.2301

F. Howarth, F. Stone

引用次数: 3

Barite replacement boxwork in the Frasassi caves (Italy) 意大利Frasassi岩洞重晶石置换箱

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2019-09-01 DOI: 10.5038/1827-806x.48.3.2223

S. Galdenzi

引用次数: 3

Petrography and provenance of floor sediments from the Loutra Almopias Cave (Pella, Macedonia, Greece) 希腊马其顿佩拉Loutra Almopias洞穴底部沉积物的岩石学及物源

IF 1.3 4区地球科学

International Journal of Speleology Pub Date : 2019-09-01 DOI: 10.5038/1827-806x.48.3.2271

I. K. Georgiadis, K. Chatzopoulou, N. Kantiranis, Ioakeim Ioakeimidis, A. Tsirambides

引用次数: 2