کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5780474 1635134 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Relationship between geohydrology and Upper Pleistocene-Holocene evolution of the eastern region of the Province of Buenos Aires, Argentina
ترجمه فارسی عنوان
رابطه بین ژئو هیدرولوژی و تکامل بالایی از پلیست اتن و هولوسن در منطقه شرقی استان بوئنوس آیرس، آرژانتین
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
چکیده انگلیسی


- Landscape evolution and its associated hydrogeological behaviours are analyzed.
- The overlying lithological environments explain hydrofacies distribution.
- Four main stages of geomorphological landscape evolution are recognized.
- The connection between the Holocene and Pleistocene aquifers is identified.
- This approach constitutes a conceptual and applied framework for future modelling.

The Upper Pleistocene-Holocene geological evolution, which is characterized by its landscape-forming energy and is related to geological and geomorphological complexity, has an impact on the groundwater dynamics of coastal aquifers. The geological configuration of a sector of the east coast of the Province of Buenos Aires was analyzed, as well as its connection with the geological and geomorphological history of the region during the Late Pleistocene and Holocene, and its influence on the regional and local geohydrological behaviour. This analysis was based on the application of the concept of hydrofacies. Boreholes were drilled and sampled (with depths of up to 40 m), and vertical electrical sounding, electrical tomography and pumping tests were undertaken. The description of the cutting samples by means of a stereo microscope, the interpretation of satellite images, and the construction of lithological and hydrogeological profiles and flow charts were carried out in the laboratory, and then integrated in a GIS. The identification of the lithological units and their distribution in the area allowed the construction of an evolutionary geological model for the Late Pleistocene and Holocene. Three aquifer units can be recognized: one of Late Pleistocene age (hydrofacies E) and the other two of Holocene age (hydrofacies A and C); their hydraulic connection depends on the occurrence and thickness variation of the aquitard units (hydrofacies B and D). The approach adopted allows the examination of the possibilities for groundwater exploitation and constitutes an applied conceptual framework to be taken into consideration when developing conceptual and numerical models at the local and regional scales.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of South American Earth Sciences - Volume 76, July 2017, Pages 276-289
نویسندگان
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