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Ground-water in Palestine / מי התהום בארץ ישראל

ל. פיקרד and L. Picard
Bulletin of the Jewish Palestine Exploration Society / ידיעות החברה העברית לחקירת ארץ-ישראל ועתיקותיה
Vol. ז‎', No. ב‎' (טבת-אדר ת"ש), pp. 52-59
Stable URL: http://www.jstor.org/stable/23724401
Page Count: 8
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Ground-water in Palestine / מי התהום בארץ ישראל
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Abstract

The borings for water in Northern Palestine, including the Carmel area and the Valley of Jezreel are exmined in a systematic survey. Parts of Shomron (Samaria) are included in the investigation. An earlier publication to which reference is made, dealt with the Western Emek. Special stress is laid in this investigation on the value of deep borings, those of over 200 m are marked out on the attached sketch map. Very noticeable is the fact that apart from the Shephela-Saron plain, such particularly deep borings in Northern Palestine have been either entirely without result or have yielded insignificant quantities of ground-water, whereas the majority of borings of shallow depth have yielded astonishingly good and plentiful supplies of water. This result has its structural geological reasons : 1) At the mountain border of the Shephela-Saron plain the mountain-strata often bend below the plain with a "flexure"-like structure. In such cases borings between 50-200 m deep suffice to obtain a plentiful supply of ground water from Turonian or Upper-Cenomanian layers. Greater depths have so far yielded no result (e. g. Pardes-Hanna, 600 m; Giveat-Ada, 500 m). 2) On the mountain border of the Carmel in the North, West and North-West, water is found everywhere — sometimes at a very shallow depth (Yagur) in the various formations of the Lower and Upper-Cenomanian and Eocen.

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