Survey report

DGS releases report on subsurface geology of Delaware City area


9:48 a.m., March 26, 2013--The Delaware Geological Survey (DGS) has published a report that details new findings on the subsurface geology of the Delaware City area.

Titled Subsurface Geology of the area between Wrangle Hill and Delaware City, Delaware, Report of Investigations Number 78 presents the results of cooperative research between geological consultant John W. Jengo of the firm MWH Americas and DGS researchers Peter P. McLaughlin Jr. and Kelvin W. Ramsey.

Research Stories

Viral dark matter

A National Science Foundation grant supports work by UD researchers on the Viral Informatics Resource for Metagenome Exploration website, designed to explore data collected from environmental viruses.

Power of the Victorian press

With support from the Interdisciplinary Humanities Research Center, 10 UD graduate students recently attended the 2014 annual meeting of the Research Society for Victorian Periodicals held at the University's Wilmington campus.

The geology and hydrology of the area between Wrangle Hill and Delaware City have been examined in many site-specific studies since the 1950s because of the need to understand possible implications of industrial activity for groundwater protection. This study integrates data from nearly 500 boreholes drilled over the last six decades and establishes, for the first time, a comprehensive view of the subsurface geology that helps better characterize the hydrogeology of the area.

The report includes two subsurface geological maps and one surficial geologic map of the study area as well as 10 stratigraphic cross sections that show the vertical and horizontal relationships of the subsurface geologic units.

The findings from this study reveal that older, generally parallel-layered geologic units that underlie the site have, along a well-defined narrow channel axis, been deeply eroded and filled by younger sand deposits. Where this feature cuts through underlying hydrologic confining layers, a potential pathway exists for hydrological communication between the surficial aquifer and deeper confined aquifers.

DGS Report of Investigations No. 78 is part of the Delaware Geological Survey’s ongoing mission to understand geologic and hydrologic systems and to advise, inform, and educate Delawareans about the results of such investigations for use in issues regarding surface and groundwater resources, agriculture, economic development, land-use planning, environmental protection, resource evaluation, engineering applications, hazard identification and mitigation, and recreation. It is available in PDF format from the DGS website.

icon-fb icon-tw icon-yt icon-fs

News Media Contact

University of Delaware
Office of Communications & Marketing

UDaily is produced by the
Office of Communications & Marketing

The Academy Building
105 East Main Street
University of Delaware
Newark, DE 19716 | USA
Phone: (302) 831-2792
University of Delaware • Newark, DE 19716 • (302) 831-2792 • ©2012
University of Delaware • Newark, DE 19716 • USA • Phone: (302) 831-2792 • © 2013
Comments|Contact Us|Legal Notices