TY - Generic T1 - Dynamic digital maps; an outreach tool for geoscience research, mapping and education in National Park Service administered lands T2 - Abstracts with Programs - Geological Society of America Y1 - 2009 A1 - Condit, Christopher D. A1 - Steven A Nathan A1 - Stephen B Mabee KW - #StaffPubs KW - cartography KW - digital cartography KW - digital data KW - digital terrain models KW - education KW - Environmental geology 22 KW - government agencies KW - land use KW - mapping KW - national parks KW - public lands KW - research KW - U. S. National Park Service KW - United States AB - The Dynamic Digital Map of Selected Sedimentary Rocks in Western Massachusetts (DDM-SedRxWMa) is an example of what can be developed for all National Park Administered land. On starting the program, the user chooses the media source: either "Web-Access" (from a server) or "Local Access" (from DVD, flash or disk drive) and immediately sees a "Home Screen". The Home Screen displays the location of five detailed maps and buttons linked to Indexes (lists) of DDM content. Each map contains numbered icons that link that location to a field guide of that site. Camera icons on the detailed maps point in the direction photos were taken; many photos are oblique aerials that place the map features in context. The aerials contain camera icons of ground photos along the field trip route. The maps can be toggled between an orthophoto map or a topographic map, each geo-referenced. Key field guide locations have 360-degree QuickTime panoramics. All images and movies have captions. The DDM-SedRxWMa program is made from the DDM-Template and is capable of displaying text (captions or field guides) at 3 different user-selectable levels. The text might instead be displayed in 3 different languages. The DDM-SedRxWMa, which includes a 7 minute automated guided tour, can be downloaded at http://ddm.geo.umass.edu/ddm-sedrxwma/ The DDM-Template is an open source program that anyone can use to make their own DDM. It and a step-by-step manual (the "Cookbook") are available along with over 20 DDMs at http://ddm.geo.umass.edu). Making a DDM from the Template requires the use of the relatively inexpensive and easy to learn, multi-platform programming environment Runtime Revolution (www.runrev.com). Maps and photos (jpeg files) and movies are stored outside the program, which acts as an organizational framework and index to present it. Text and data are saved within the program and can be imported from html, rtf or txt format files. Map unit labels, sample sites, and graphics, such as camera icons (created in the Template) can be overlain on the maps or images; and provide a link to view the associated data or images. Once the Template has been modified and renamed, a single step creates 3 royalty-free, stand-alone programs, one each for Unix, Windows and Macintosh operating systems. A DDM program matching the user's operating system can be made available online. JF - Abstracts with Programs - Geological Society of America PB - Geological Society of America (GSA) : Boulder, CO, United States CY - United States VL - 41 SN - 00167592 UR - https://gsa.confex.com/gsa/2009AM/finalprogram/abstract_166833.htm IS - 77 N1 - Accession Number: 2011-030563; Conference Name: Geological Society of America, 2009 annual meeting; Portland, OR, United States; Conference Date: 20091018; Language: English; Coden: GAAPBC; Collation: 1; Collation: 365; Publication Types: Abstract Only; Serial; Conference document; Updated Code: 201118; Monograph Title: Geological Society of America, 2009 annual meeting; Monograph Author(s): Anonymous; Reviewed Item: Analytic JO - Abstracts with Programs - Geological Society of America ER - TY - Generic T1 - Foraminifera ecology on the continental shelf, Merrimack Embayment, Gulf of Maine, New England T2 - Abstracts with Programs - Geological Society of America Y1 - 2010 A1 - Steven A Nathan A1 - Leckie, R. Mark A1 - Stephen B Mabee KW - #StaffPubs KW - applications KW - Atlantic Ocean KW - benthic taxa KW - Cenozoic KW - cluster analysis KW - deltaic environment KW - Economic geology, geology of nonmetal deposits 28A KW - Foraminifera KW - gravel deposits KW - Gulf of Maine KW - Invertebrata KW - Maine KW - marine environment KW - marine sediments KW - massachusetts KW - Merrimack River valley KW - microfossils KW - mining KW - North Atlantic KW - paleoecology KW - paleogeography KW - Pleistocene KW - Protista KW - Quaternary KW - Quaternary geology 24 KW - sand deposits KW - sea-level changes KW - sediments KW - shelf environment KW - species diversity KW - statistical analysis KW - United States KW - upper Pleistocene AB - During the late Pleistocene the Merrimack River paleodelta formed as post-glacial rebound produced a local low stand in sea level. Drowned as sea level rose, the paleodelta is now being reworked by a variety of processes. This study uses benthic foraminifera as a biotic and environmental proxy to study the sand and gravel resources of the paleodelta. Nineteen sediment samples were collected from the paleodelta along two east-west transects east of the Merrimack River. From these samples nearly 6000 benthic foraminifera, representing 62 species, were collected and identified. Although dissolution compromised the preservation of calcite tests within six samples, the resulting data is robust and allows for numerous conclusions to be drawn. Specifically, benthic foraminifera become more common distally and specific species inhabit specific areas of the paleodelta. Distribution patterns of some species have changed significantly since the late 1940s, with some species migrating landward, others, seaward. Distributions of some taxa differ significantly between the two transects, both in the present day and from the past. These differences may point to the influence of, and changes in, the Merrimack River outflow upon water column nutrient delivery, productivity and food availability over the past 60 years. Species diversity and evenness peak at the delta break, coincident with low species dominance at 50 meters water depth. Q-mode cluster analyses show three distinct assemblages, "shallow" (< or =30 meters water depth), "deep" (> or =40 meters), and "delta edge" (50 meters). There is no apparent correlation between foraminiferal distributions and deltaic bedforms, and in turn, sediment type. This implies that foraminiferal distributions are controlled by other environmental variables such as food. In summary, benthic foraminiferal assemblage analyses complement geophysical techniques. Benthic foraminifera can also help assess the marine impact of, e.g., mining sediment resources, watershed development, pollution, rising sea level, and increased fishing. JF - Abstracts with Programs - Geological Society of America PB - Geological Society of America (GSA) : Boulder, CO, United States CY - United States VL - 42 SN - 00167592 UR - https://gsa.confex.com/gsa/2010NE/finalprogram/abstract_170108.htm IS - 11 N1 - Accession Number: 2010-092674; Conference Name: Geological Society of America, Northeastern Section, 45th annual meeting Geological Society of America, Southeastern Section, 59th annual meeting; Baltimore, MD, United States; Conference Date: 20100314; Language: English; Coordinates: N423000N430000W0703000W0705000; Coden: GAAPBC; Collation: 1; Collation: 82; Publication Types: Abstract Only; Serial; Conference document; Updated Code: 201049; Monograph Title: Geological Society of America, Northeastern Section, 45th annual meeting; Geological Society of America, Southeastern Section, 59th annual meeting; joint meeting, abstracts volume; Monograph Author(s): Anonymous; Reviewed Item: Analytic JO - Abstracts with Programs - Geological Society of America ER - TY - MAP T1 - Prototype three-dimensional surficial materials map of the Marlborough quadrangle, Massachusetts Y1 - 0 A1 - Steven A Nathan A1 - Stephen B Mabee KW - #MGSPubs KW - #SurficialMaps KW - 3D KW - Ashland KW - Berlin KW - glacial KW - Hopkinton KW - Hudson KW - Malborough KW - Northborough KW - Southborough KW - subsurface KW - surface KW - surficial KW - Westborough AB -

This map integrates well-drilling data with surficial geologic mapping and bedrock geology to produce a true three-dimensional model of the subsurface conditions within the Marlborough quadrangle, Massachusetts. The first component of this model is a map depicting a three-dimensional block diagram of the stratigraphic units that overlie the bedrock surface. The map also presents three-dimensional depictions of the individual stratigraphic units, their aerial extent and volumes.

In addition to the map, the supporting grid files, database and documentation for the three-dimensional model are provided.

This three-dimensional model of the subsurface stratigraphy of the Marlborough quadrangle provides a tool to visualize and explore the relationships of the subsurface units to one another, to the underlying bedrock, and to the water bearing fractures within the bedrock.

There are three immediate benefits of this three-dimensional model:

  1. it provides a better estimate of the volume of sand and gravel resources, surpassing current assessments it affords an estimate of the volume of water available in storage, making it a more complete measure of our water assets.
  2. it includes grid files of each stratigraphic unit, which provides a better initial conceptual model of the aquifer systems. The consulting community and water managers can import these grid files into groundwater modeling software for numerical analysis. In addition, the three-dimensional model can better delineate ground water flows, areas of groundwater recharge, and aquifer interconnectedness.
  3. It will also help identify possible contaminant pathways and assist in the placement of ground water monitoring wells. The model can also be used to assist with the planning of major construction projects, assess the impacts from development, provide guidance for land use planning and smart growth initiatives. In total, a three-dimensional model of the subsurface provides critical geologic information for natural resource decision making.
JF - Open-File Report PB - Massachusetts Geological Survey ER - TY - ABST T1 - Land area potentially affected by sea level rise along the Massachusetts coast Y1 - 2006 A1 - Joseph P Kopera A1 - Steven A Nathan KW - #MGSPub KW - #Misc KW - climate change KW - coast KW - flooding KW - sea level rise JF - Open-File Report PB - Massachusetts Geological Survey UR - http://www.geo.umass.edu/stategeologist/ ER - TY - RPRT T1 - A microfossil evaluation of sediment deposits on the continental shelf, Merrimack embayment, New England Y1 - 2007 A1 - Steven A Nathan A1 - Leckie, R.M. A1 - Stephen B Mabee KW - #MGSPubs KW - #Reports KW - Foraminifera KW - fossils KW - Merrimack Delta KW - Merrimack Embayment KW - Merrimack River KW - microfossils KW - offshore KW - sedimentology AB - Final Report to Minerals Management Service, U.S. Department of Interior 60 pages. contact sbmabee @geo.umass.edu PB - Massachusetts Geological Survey ER -