scholarly journals Deep Gold Exploration with SQUID TEM in the Qingchengzi Orefield, Eastern Liaoning, Northeast China

Minerals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 102
Author(s):  
Junjie Wu ◽  
Qingquan Zhi ◽  
Xiaohong Deng ◽  
Xingchun Wang ◽  
Xiaodong Chen ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Gold Mineralization ◽  
Structural Characteristics ◽  
Northern Margin ◽  
Data Inversion ◽  
The North ◽  
Dolomite Marble ◽  
Transient Electromagnetic ◽  
Bottom Interface ◽  
Shallow Area

The Qingchengzi orefield is an important polymetallic ore concentration zone in the northern margin of the North China Craton (NCC). The region has significant metallogenic potential for deep mining. Many areas with gold mineralization have been found in the shallow area of Taoyuan–Xiaotongjiapuzi–Linjiasandaogou in the east of the Qingchengzi orefield. To assess the distribution of mineralization levels, we carried out deep exploration using the transient electromagnetic method (TEM). A superconductive quantum interference device (SQUID) magnetometer and a conventional induction coil were used for field data acquisition. The SQUID data inversion results reflect the bottom interface of the high-conductivity area, the fold state of the underlying dolomite marble stratum, and the deep structural characteristics of the syncline. Secondary crumples appear in the inversion results of the southern segment of TEM, which is inferred as a favorable area for deep gold mineralization. Negative values appear in the SQUID data of some stations, to varying degrees. This induced polarization phenomenon may be related to deep gold mineralization.

Gold mineralization in Proterozoic black shales: Example from the Haoyaoerhudong gold deposit, northern margin of the North China Craton

2014 ◽  
Vol 63 ◽  
pp. 150-159 ◽  
Author(s):  
Jianping Wang ◽  
Jiajun Liu ◽  
Runmin Peng ◽  
Zhenjiang Liu ◽  
Baisheng Zhao ◽  
...  
Keyword(s):  
Gold Deposit ◽  
North China Craton ◽  
North China ◽  
Gold Mineralization ◽  
Black Shales ◽  
Northern Margin ◽  
The North

scholarly journals Morphotectonic Analysis along the Northern Margin of Samos Island, Related to the Seismic Activity of October 2020, Aegean Sea, Greece

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 102
Author(s):  
Paraskevi Nomikou ◽  
Dimitris Evangelidis ◽  
Dimitrios Papanikolaou ◽  
Danai Lampridou ◽  
Dimitris Litsas ◽  
...  
Keyword(s):  
Fault Zone ◽  
Seismic Activity ◽  
Volcanic Rocks ◽  
Active Tectonics ◽  
Normal Fault ◽  
Aegean Sea ◽  
Northern Margin ◽  
The North ◽  
Eastern Aegean ◽  
Half Graben

On 30 October 2020, a strong earthquake of magnitude 7.0 occurred north of Samos Island at the Eastern Aegean Sea, whose earthquake mechanism corresponds to an E-W normal fault dipping to the north. During the aftershock period in December 2020, a hydrographic survey off the northern coastal margin of Samos Island was conducted onboard R/V NAFTILOS. The result was a detailed bathymetric map with 15 m grid interval and 50 m isobaths and a morphological slope map. The morphotectonic analysis showed the E-W fault zone running along the coastal zone with 30–50° of slope, forming a half-graben structure. Numerous landslides and canyons trending N-S, transversal to the main direction of the Samos coastline, are observed between 600 and 100 m water depth. The ENE-WSW oriented western Samos coastline forms the SE margin of the neighboring deeper Ikaria Basin. A hummocky relief was detected at the eastern margin of Samos Basin probably representing volcanic rocks. The active tectonics characterized by N-S extension is very different from the Neogene tectonics of Samos Island characterized by NE-SW compression. The mainshock and most of the aftershocks of the October 2020 seismic activity occur on the prolongation of the north dipping E-W fault zone at about 12 km depth.

Assessment for improving the performance of NICUs: The Italian experience

2017 ◽  
Vol 30 (3) ◽  
pp. 168-178 ◽  
Author(s):  
Simone Fanelli ◽  
Antonello Zangrandi
Keyword(s):  
Neonatal Intensive Care ◽  
Structural Characteristics ◽  
Care Quality ◽  
Neonatal Intensive Care Units ◽  
Organizational Models ◽  
Organizational Variables ◽  
The North ◽  
Italian Experience ◽  
Behaviour Models ◽  
North And South

This paper describes neonatal intensive care units (NICU) in Italy using a set of organizational variables identifying management profile. The correlations between variables, and how these are impacted by structural aspects of the department or hospital, are investigated. The research was conducted within the 5-year far-reaching and complex SONAR study run by the Italian Neonatal Network, which maps NICU, monitors outcomes of member centres, defines organizational models, and identifies best practices to improve care quality. Seven variables relating to activities, organization processes, and behaviour models used in the SONAR study were used here to assess NICU. Data from 54 Italian NICUs, 1601 nursing staff, and 643 doctors were used. We identified high levels of variation in NICUs for all aspects of organization. We also identified important opportunities for improvement, especially in the areas of performance measurement, quality improvement, and learning for healthcare staff. In terms of structural characteristics, we identified big differences between NICUs in the north and south of Italy. The findings provide a description of NICUs in Italy and identify a set of variables useful for management in assessing NICU, which are among the most complex and costly operational units in a hospital.

Gold deposits of the northern margin of the North China Craton: multiple late Paleozoic–Mesozoic mineralizing events

2002 ◽  
Vol 37 (3) ◽  
pp. 326-351 ◽  
Author(s):  
Craig J. Hart ◽  
Richard J. Goldfarb ◽  
Yumin Qiu ◽  
Lawrence Snee ◽  
Lance D. Miller ◽  
...  
Keyword(s):  
North China Craton ◽  
North China ◽  
Gold Deposits ◽  
Late Paleozoic ◽  
Northern Margin ◽  
The North

scholarly journals Re-Discussion on the Metallogenic Age of the Hadamengou Gold Deposit in Inner Mongolia, China

2016 ◽  
Vol 5 (2) ◽  
pp. 85
Author(s):  
Yu Zhang ◽  
Yangyang Chen
Keyword(s):  
Gold Deposit ◽  
Inner Mongolia ◽  
North China ◽  
Northern Margin ◽  
The North ◽  
Geological Evolution ◽  
Western Segment ◽  
Mineralization Age ◽  
Extensive Collection ◽  
Metallogenic Age

The Hadamengou gold deposit is located in the western segment of the northern margin of the North China Craton (NCC). The mineralization age of the Hadamengou gold deposit is a matter of controversy. Based on the extensive collection the results of previous research, we infer that the Hadamengou gold deposit is exposed to prolonged geological evolution. It was formed as early as the Middle Hercynian orogen. The metallization mainly took place in the Early Indosinian epoch.

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