Downloads provided by UsageCounts
A field of more than 200 exotic boulders scattered over an area of 150 hectares, was discovered in a suburban residential area in Southwestern New Jersey, USA on the unconsolidated Quaternary deposits of the Atlantic Coastal Plain (ACP). Half of the boulders are overtly fossiliferous, harboring tentatively identified Devonian fossils dominated by Plantae, Archaeopteris and Psilophyton but include vertebrates; Antiarch placoderms cf. Pterichthes, Ostracoderm cf. Cephalaspis, invertebrates; gastropod cf. Pleurotomaria tuboides and ichnofossils; Chondrites fabrics and Helicodromites correlative with formations in southcentral New York State. Observed boulder dispersal was eight clasts per hectare but Ground Penetrating Radar (GPR) reconnaissance revealed higher density in the subsurface. Borehole stratigraphy failed to reveal the suspected Pleistocene boulder-bearing stratum. The boulders exhibit faceted, plate and block shapes, some with polished faces and striations, suggesting glacial derivation even though the field is more than 150 kilometers south of the terminal moraines of Pleistocene glaciation crossing the northern part of the state. Comparison of generally accepted fluvial with glacial transport modes concludes that the boulders were ice-rafted into the study area and deposited as melt out dropstones during a sea level highstand when the regional lithosphere was glacioisostatically depressed below the eustatic drop in sea level associated with glacial epochs. The age of the host sediments indicates emplacement during the Middle Pleistocene. These observations have important implications for continental glaciology particularly in areas proximate to sea coasts.
New Jersey, Fossils, Geology, FOS: Earth and related environmental sciences, Paleozoic
New Jersey, Fossils, Geology, FOS: Earth and related environmental sciences, Paleozoic
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
| views | 46 | |
| downloads | 46 |

Views provided by UsageCounts
Downloads provided by UsageCounts