Shallow subsurface geology of the North Charleston 7.5-minute Quadrangle, South Carolina

1985 ◽  
Author(s):  
R.E. Weems ◽  
E.M. Lemon ◽  
Lucy McCartan
Keyword(s):  
South Carolina ◽  
Shallow Subsurface ◽  
Subsurface Geology ◽  
The North ◽  
North Charleston

scholarly journals REVIEW OF THE LAND SUBSIDENCE HAZARD IN PEKALONGAN DELTA, CENTRAL JAVA: INSIGHTS FROM THE SUBSURFACE

2021 ◽  
Vol 36 (4) ◽  
pp. 163-176
Author(s):  
Dwi Sarah ◽  
Eko Soebowo ◽  
Nugroho Aji Satriyo
Keyword(s):  
Land Subsidence ◽  
Groundwater Resources ◽  
Research Direction ◽  
Future Research ◽  
Land Loss ◽  
Subsurface Geology ◽  
The North ◽  
Central Java ◽  
Over Exploitation ◽  
Global Threat

Land subsidence is a global threat to coastal areas worldwide, including the North Java coastal area. Of many areas experiencing land subsidence in North Java, the rate of land subsidence in Pekalongan has matched the high subsidence rates usually found in big cities. The rate of land subsidence in Pekalongan far exceeds the sea-level rise, resulting in a looming threat of land loss. The devastating impacts of land subsidence are the manifestation of its subsurface movement. Therefore, it is essential to understand the subsurface to elucidate the mechanism of land subsidence. Previous studies on land subsidence in Pekalongan are mainly related to subsidence rate monitoring and have not elaborated on the subsurface condition. This paper reviews the Pekalongan subsurface geology based on available literature to provide insight into the land subsidence problem. The results revealed that the land subsidence occurs in the recent alluvial plain of Pekalongan, consisting of a 30-70 m thick compressible deposit. Possible mechanisms of land subsidence arise from natural compaction, over-exploitation of confined groundwater, and increased built areas. As the seismicity of the study area is low, tectonic influence on land subsidence is considered negligible. It is expected that the offshore, nearshore, and swamp deposits are still naturally compacting. As the surface water supply is minimal, over-exploitation of groundwater resources from the deltaic and Damar Formation aquifers occurs. In the end, future research direction is proposed to reduce the impacts of the subsidence hazard.

scholarly journals Recovery and Phylogenetic Analysis ofnifH Sequences from Diazotrophic Bacteria Associated with Dead Aboveground Biomass of Spartina alterniflora

2001 ◽  
Vol 67 (11) ◽  
pp. 5308-5314 ◽  
Author(s):  
Charles R. Lovell ◽  
Michael J. Friez ◽  
John W. Longshore ◽  
Christopher E. Bagwell
Keyword(s):  
South Carolina ◽  
Spartina Alterniflora ◽  
Salt Marshes ◽  
Gel Electrophoresis ◽  
Azospirillum Brasilense ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Diazotrophic Bacteria ◽  
The North ◽  
Standing Dead ◽  
Gradient Gel Electrophoresis

ABSTRACT DNA was extracted from dry standing dead Spartina alterniflora stalks as well as dry Spartinawrack from the North Inlet (South Carolina) and Sapelo Island (Georgia) salt marshes. Partial nifH sequences were PCR amplified, the products were separated by denaturing gradient gel electrophoresis (DGGE), and the prominent DGGE bands were sequenced. Most sequences (109 of 121) clustered with those from α-Proteobacteria, and 4 were very similar (>99%) to that of Azospirillum brasilense. Seven sequences clustered with those from known γ-Proteobacteria and five with those from known anaerobic diazotrophs. The diazotroph assemblages associated with dead Spartina biomass in these two salt marshes were very similar, and relatively few major lineages were represented.

Faulting in Mars Polar Layered deposits modeled by HCA method

2020 ◽  
Author(s):  
Paola Cianfarra ◽  
Costanza Rossi ◽  
Francesco Salvini ◽  
Laura Crispini
Keyword(s):  
Cross Section ◽  
Hydrothermal Activity ◽  
Geological Mapping ◽  
Normal Faults ◽  
Natural Material ◽  
Shallow Subsurface ◽  
Ice Caps ◽  
The North ◽  
Wide Range ◽  
Polar Layered Deposits

<p>The polar layered deposits (PLD) of Mars constitute the water ice stratigraphy of polar spiral troughs up to several kilometers thick (Phillips et al., 2011; Smith et al. 2015). PLD cross section profiles from the Shallow Subsurface Radar (SHARAD) instrument on NASA’s Mars Reconnaissance Orbiter, show the presence of internal discontinuities within these layers (Foss et al., 2017; Putzig et al., 2017). The mechanisms responsible for these deformations are still an open issue (Guallini et al., 2017) and this work represents the contribution of stress-related deformations. Layered ice is simulated by a mesh of cells within a HCA grid build replicating the physical properties and preserving volumes following balanced cross-section principles. Three major types of link exist among adjacent cells: 1. intra-layer relations link cells belonging to the same layer; 2. inter-layer relations regulate the relationships among adjacent layers; 3. discontinuity relations correspond to the presence of ruptures such as faults (Salvini et al., 2001). The HCA method allows to replicate the natural material anisotropies, such as rocks and ice sheet internal layering, and to simulate complex tectonic evolutionary paths (Cianfarra and Salvini, 2016; Cianfarra and Maggi, 2017). The models allow simulating the kinematics of the internal architecture of the layered deposits from both the north and the south Martian ice caps. In particular the observed stratigraphy (geometries and thickness of the ice layers) is replicated as resulting from the relative, normal movement among blocks separated by listric shaped normal faults and minor inversions.</p><p>The used HCA numerical methodology revealed an effective tool to support planetary geological mapping and 3D subsurface geological reconstructions. Through the integration of a net of spatially distributed along- and across- strike (balanced) sections it is possible to simulate the 4D (3D plus time) geological evolution of buried and/or topographic structures. Results have a wide range of applications including the optimal selection of landing sites for scheduled and future planetary exploration missions, as well as unravelling the geological and structural setting of enigmatic features on the planetary surfaces affected, for example, by salt tectonism, volcano-tectonics, tectonically-related hydrothermal activity, fluid storage and release, and ice tectonics.</p>

A NEW RACE OF BASILARCHIA ARCHIPPUS CRAMER FROM LOUISIANA (RHOPAEOCERA—NYMPHAEIDAE)

1938 ◽  
Vol 70 (12) ◽  
pp. 243-243
Author(s):  
Cyril F. Dos Passos
Keyword(s):  
North Carolina ◽  
South Carolina ◽  
New Mexico ◽  
North American ◽  
The North ◽  
New Race

The latest revision of the North American Basilarchia (Gunder, 1934, Can. Ent. LXVI: 39) recognizes three races of archippus Cramer (1779, Pap. Ex. I, t. 16 a, b) i.e. a. archippus inhabiting southern Canada and the Atlantic states as far south as North Carolina and west to Illinois, a. floridensis Strecker (1878, Cat. p. 143) found from South Carolina to the tip of Florida and a. obsoleta Edwards (1882, Fapilio 2: 22) occuring in Arizona, Utah and New Mexico.

scholarly journals Plantation Houses of North Florida

2017 ◽  
Vol 2 (1) ◽  
pp. 59
Author(s):  
Eduardo Robles
Keyword(s):  
South Carolina ◽  
Civil War ◽  
Construction Materials ◽  
Traditional Architecture ◽  
Leon County ◽  
The North ◽  
Plantation Life ◽  
The Times ◽  
Definition Of ◽  
North And South

<p>The concept of Plantation conjures an image that identifies the North Florida / South Georgia region of the U. S. Leon County attracted many cotton planters from Georgia, Virginia, Maryland, North and South Carolina in the 1820’s to the 1850’s. Up to the beginning of the Civil War, Leon County was the 5th largest producer of cotton counting all counties from Florida and Georgia. The Civil War brought the plantation culture to a standstill.</p><p>The plantations transformed the environment based on their need for open fields in which to cultivate different crops, or raise a variety of animals with the help of slaves. From the 1900’s many plantations abandoned their land to nature producing a deep change in the local landscape. Today plantations are not used as much for planting crops but more for hunting or as tree farms. The hunting plantations do not grow crops but provide good conditions for the hunting of animals and birds. Other plantations were torn apart, sold and now are part of the Tallahassee urban fabric. In other words, they disappeared.</p><p>The transformation of the plantations has been slow and steady, and has become the image of the area, even the region. The paper shows five plantations that represent five different evolutions of these traditional landscapes. The landscapes have evolved to accommodate the very local but fluid definition of place. It is this transformation, this evolving identity which helped preserve some of the traditional landscapes and the traditional architecture on them.</p><p>The most prominent feature of the plantation is the “Big House” or plantation house. The house embodies all aspects of the plantation life style. The construction materials and methods reflected the times, the technologies and the available resources.</p><p>The research has been done mainly in the archives of the Tallahassee Trust for Historic Preservation. The results, still pending, explain the land typology as it evolved from the golden decades of the plantation culture to the present day land use.</p>

scholarly journals Four Crayfishes (Decapoda: Cambaridae) New to the North Carolina Fauna, With Notes on Other Species in the State

2013 ◽  
Vol 129 (2) ◽  
pp. 53-57 ◽  
Author(s):  
John E. Cooper ◽  
William T. Russ
Keyword(s):  
Invasive Species ◽  
North Carolina ◽  
South Carolina ◽  
River Basin ◽  
Endemic Species ◽  
Native Species ◽  
Single Specimen ◽  
The North ◽  
New Localities ◽  
Voucher Specimens

Abstract Cambarus (Puncticambarus) aldermanorum, originally considered endemic to South Carolina, is now known from the upper Catawba River basin in Burke and Caldwell counties, North Carolina. Orconectes (Crockerinus) erichsonianus and Orconectes (Procericambarus) forceps, both previously known from Alabama, Georgia, Tennessee and Virginia, are apparently now expanding their ranges from Tennessee into the French Broad River basin in Madison County, North Carolina. Cambarus (Cambarus) eeseeohensis, an endemic species once considered limited in distribution to the Linville River in Avery County, is reported from the Watauga River basin in Watauga County and the Johns River subdrainage of the Catawba River basin in Avery County. Voucher specimens for new localities for an undescribed endemic species, Orconectes (Procericambarus) sp. (the “Cheoah” crayfish), and two invasive species, Orconectes (Gremicambarus) virilis and Orconectes (Procericambarus) rusticus, are provided. A single specimen of a non-native species, Procambarus (Pennides) spiculifer, is reported from a tributary of the Watauga River in Watauga County. Some life history and taxonomic notes for several of the species are included.

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