Title: Karst Terrain of the North Coast of Puerto Rico, Figure 1: Principal Aquifer in Puerto Rico
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Permanent Link: http://ufdc.ufl.edu/WL00000679/00001
 Material Information
Title: Karst Terrain of the North Coast of Puerto Rico, Figure 1: Principal Aquifer in Puerto Rico
Physical Description: Photograph
Language: English
 Subjects
Spatial Coverage: North America -- United States of America -- Florida
 Notes
Abstract: Karst Terrain of the North Coast of Puerto Rico, Figure 1: Principal Aquifer in Puerto Rico
General Note: Box 7, Folder 1 ( Vail Conference 1987 - 1987 ), Item 72
Funding: Digitized by the Legal Technology Institute in the Levin College of Law at the University of Florida.
 Record Information
Bibliographic ID: WL00000679
Volume ID: VID00001
Source Institution: Levin College of Law, University of Florida
Holding Location: Levin College of Law, University of Florida
Rights Management: All rights reserved by the source institution and holding location.

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A'Iguou i PI'% % PJ % ,Im Cabezas
d San Juan
Pta Higuero
SIsla de
Culebra

:. .. H .. cao IS s


A Santa Isab I 66
A 67s

0 10 20 30 40 SOMILES

EXPLANATION

SNorth Coast limestone aquifer
SSouth Coastal Plain aquifer
SAlluvial Valley aquifers
Esperanza and Resolucior Valley aquifer

SSan Sebastian Formation and volcanic rocks
A-A'Trace of cross section


A A' EXPLANATION
2000'
A. San Sebastian Formation
and volcanic rocks
1000'
B. Lares limestone

Sea level C. Montebello limestone
member of Cibao Formation

-1000' 0. Aguada limestone
i. Aymam6n limestone
-2000'

0 S 10MILES
B

Fig. 1 Principal Aquifer in Puerto Rico

A, Geographic Distribution
B, Generalized Cross Section (A-A')
Showing Principal Hydrogeologic
Units of North Coast Limestone Aquifer.





L6(0


+(QO








ground. The karst terrain is divided (Fig. 2, Table 1) into

six formations:

1- San Sebastian Formation

2- Lares Limestone

3- Cibao Formation

4- Aguada Limestone

5- Aymamon Limestone

6- Camuy Formation

The San Sebastian Formation rests unconformably on a

very irregular surface of folded and faulted Cretaceous to

Eocene age volcanic clastics. The age of the San Sebastian

Formation is based on the presence of Late Oligocene

mollusks and echinoids. The formation predominantly

consists of variably colored clays and sandy clays. Locally

it consists of conglomerates ranging in size from pebbles to

boulders and is interbedded with lignite or carboniferous

clay. The origin of the San Sebastian is based on the

presence of plastic material indicating a large river

emptying into a nearby sea.

The Lares Limestone consists mainly of indurated, very

pale orange, fine to medium grained calcarenite stratified

into beds ranging from ten centimeters to about one meter in

thickness. It contains abundant calcareous algae and coral

heads, with locally spread foraminifera. The abundance of

foraminifera indicates the age of the formation to be

Oligocene. The presence of some Miocene age faunal elements

suggests the age to be Late Oligocene. The Lares Limestone




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