scholarly journals Holocene history of deep-seated landsliding in the North Fork Stillaguamish River valley from surface roughness analysis, radiocarbon dating, and numerical landscape evolution modeling

2017 ◽  
Vol 122 (2) ◽  
pp. 456-472 ◽  
Author(s):  
Adam M. Booth ◽  
Sean R. LaHusen ◽  
Alison R. Duvall ◽  
David R. Montgomery
Keyword(s):  
Surface Roughness ◽  
Radiocarbon Dating ◽  
Landscape Evolution ◽  
River Valley ◽  
The North ◽  
North Fork ◽  
Roughness Analysis ◽  
History Of ◽  
Evolution Modeling

scholarly journals Topographically-controlled Deglacial History of the Humber River Basin, Western Newfoundland

2003 ◽  
Vol 55 (3) ◽  
pp. 213-228 ◽  
Author(s):  
Martin J. Batterson ◽  
Norm R. Catto
Keyword(s):  
Long Range ◽  
River Basin ◽  
River Valley ◽  
Lake Levels ◽  
Ice Flow ◽  
Fine Grained ◽  
The North ◽  
History Of ◽  
Humber River ◽  
Late Wisconsinan

AbstractThe Humber River in western Newfoundland flows through a large interior basin, that influenced Late Wisconsinan ice flow from major dispersal centres to the north, in the Long Range Mountains, and to the east in The Topsails. An early southward ice flow from a source to the north covered coastal areas in the western part of the basin. Subsequent regional ice flow was southwestward to northwestward from The Topsails, while south to southwestward flowing ice from the Long Range Mountains occupied the upper Humber River valley. This flow was confluent with ice from The Topsails and moved northwestward toward Bonne Bay. Regional deglaciation began about 13 ka from the inner coast. Ice occupying the Deer Lake valley dammed glacial Lake Howley in the adjacent Grand Lake and Sandy Lake basins to an elevation up to 85 m above present lake levels, which were controlled by drainage through a western outlet feeding into St. George’s Bay. The lake was lowered by exposure of the South Brook valley outlet, and finally drained catastrophically through a spillway at Junction Brook. Marine limit at the coast was 60 m asl. Inland deltas at the head of Deer Lake and fine-grained sediment exposed in the Deer Lake valley show inundation below 45 m present elevation. This produced a narrow embayment extending at least 50 km inland from the modern coast and is named here as ‘Jukes Arm’. Dated marine macrofossils in the Humber Arm and lower Humber River valley, indicate the deltas at the head of Deer Lake formed about 12.5 ka.

History of Fish Investigations in the Yadkin–Pee Dee River Drainage of North Carolina and Virginia with an Analysis of Nonindigenous Species and Invasion Dynamics of Three Species of Suckers (Catostomidae)

2013 ◽  
Vol 129 (3) ◽  
pp. 82-106 ◽  
Author(s):  
Bryn H. Tracy ◽  
Robert E. Jenkins ◽  
Wayne C. Starnes
Keyword(s):  
North Carolina ◽  
Nonindigenous Species ◽  
The North ◽  
Pee Dee ◽  
North Fork ◽  
History Of ◽  
Nonnative Fish ◽  
Pee Dee River ◽  
River Drainages

Abstract North Carolina's river drainages continue to lose their faunal distinctiveness as nonnative fish species establish themselves and expand their distributions, resulting in biotic homogenization. One such example is the Pee Dee drainage on the Atlantic Slope. It is the most speciose drainage in North Carolina, inhabited by 113 species of which 34 are nonindigenous, many introduced from adjacent drainages. The history of fish investigations in the Pee Dee in North Carolina and Virginia is detailed herein. The fauna was first sampled by Cope in 1869 at two conjoined sites—Yadkin River and Gobble Creek, a small tributary at the Yadkin River site (Cope 1870). Cope described numerous new taxa from the drainage, and many subsequent researchers provided data that show additions of nonnative faunal elements. As a case study, indications are that Hypentelium roanokense, Roanoke Hog Sucker, Hypentelium nigricans, Northern Hog Sucker, and Moxostoma rupiscartes, Striped Jumprock, were cryptically introduced after the late 1950s. The Roanoke Hog Sucker, introduced as recently as the 2000s, is found only in three tributaries of the Ararat subsystem in North Carolina and Virginia. The Northern Hog Sucker has expanded its range very little, confined primarily to the North Fork Reddies and Ararat subsystems and a short segment of the mainstem Yadkin River in North Carolina. The Striped Jumprock is now in much of the upper Yadkin system, but not in Virginia, and at several sites in the South Yadkin subsystem. Natural dispersal of all three species is limited by dams and impoundments, but the dispersal by Striped Jumprock has probably been aided by multiple bait bucket introductions. Consequences of nonindigenous species introductions in the drainage are well known for some species but unknown for the Roanoke Hog Sucker, Northern Hog Sucker, and Striped Jumprock.

Ras al Khaimah: further archaeological discoveries

Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi
Keyword(s):  
United Arab Emirates ◽  
The State ◽  
Focused Attention ◽  
North East ◽  
The North ◽  
History Of ◽  
The City

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.

Sequencing Analysis and Phylogenetic Tree of HPV Isolated from Breast Cancer Patients at Thi-Qar Province/Iraq

2020 ◽  
pp. 37-40
Keyword(s):  
Nucleotide Sequence ◽  
Phylogenetic Tree ◽  
Evolutionary Relationship ◽  
Nucleotide Sequencing ◽  
Sequencing Analysis ◽  
Breast Cancer Patients ◽  
The North ◽  
Formalin Fixed Paraffin ◽  
Formalin Fixed Paraffin Embedded ◽  
History Of

Genetic variety examination has demonstrated fundamental to the understanding of the epidemiological and developmental history of Papillomavirus (HPV), for the development of accurate diagnostic tests and for efficient vaccine design. The HPV nucleotide diversity has been investigated widely among high-risk HPV types. To make the nucleotide sequence of HPV and do the virus database in Thi-Qar province, and compare sequences of our isolates with previously described isolates from around the world and then draw its phylogenetic tree, this study done. A total of 6 breast formalin-fixed paraffin-embedded (FFPE) of the female patients were included in the study, divided as 4 FFPE malignant tumor and 2 FFPE of benign tumor. The PCR technique was implemented to detect the presence of HPV in breast tissue, and the real-time PCR used to determinant HPV genotypes, then determined a complete nucleotide sequence of HPV of L1 capsid gene, and draw its phylogenetic tree. The nucleotide sequencing finding detects a number of substitution mutation (SNPs) in (L1) gene, which have not been designated before, were identified once in this study population, and revealed that the HPV16 strains have the evolutionary relationship with the South African race, while, the HPV33 and HPV6 showing the evolutionary association with the North American and East Asian race, respectively.

Sign in / Sign up

Export Citation Format

Share Document