scholarly journals Ultrahigh-temperature Metamorphism (1150 C, 12 kbar) and Multistage Evolution of Mg-, Al-rich Granulites from the Central Highland Complex, Sri Lanka

2004 ◽  
Vol 45 (9) ◽  
pp. 1821-1844 ◽  
Author(s):  
K. SAJEEV
Keyword(s):  
Sri Lanka ◽  
Central Highland ◽  
Ultrahigh Temperature

Late-Neoproterozoic ultrahigh-temperature metamorphism in the Highland Complex, Sri Lanka

2015 ◽  
Vol 271 ◽  
pp. 311-333 ◽  
Author(s):  
P.L. Dharmapriya ◽  
Sanjeewa P.K. Malaviarachchi ◽  
M. Santosh ◽  
Li Tang ◽  
K. Sajeev
Keyword(s):  
Sri Lanka ◽  
Ultrahigh Temperature ◽  
Late Neoproterozoic

Metamorphic evolution of high-pressure and ultrahigh-temperature granulites from the Highland Complex, Sri Lanka

2006 ◽  
Vol 28 (1) ◽  
pp. 20-37 ◽  
Author(s):  
Yasuhito Osanai ◽  
Krishnan Sajeev ◽  
Masaaki Owada ◽  
K.V.Wilbert Kehelpannala ◽  
W.K.Bernard Prame ◽  
...  
Keyword(s):  
High Pressure ◽  
Sri Lanka ◽  
Metamorphic Evolution ◽  
Ultrahigh Temperature

scholarly journals Distinct metamorphic evolution of alternating silica-saturated and silica-deficient microdomains within garnet in ultrahigh-temperature granulites: An example from Sri Lanka

2017 ◽  
Vol 8 (5) ◽  
pp. 1115-1133 ◽  
Author(s):  
P.L. Dharmapriya ◽  
Sanjeewa P.K. Malaviarachchi ◽  
Leo M. Kriegsman ◽  
K. Sajeev ◽  
Andrea Galli ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Metamorphic Evolution ◽  
Ultrahigh Temperature

Rare evidence for formation of garnet+corundum during isobaric cooling of ultrahigh temperature metapelites: New insights for retrograde P–T trajectory of the Highland Complex, Sri Lanka

Lithos ◽  
2015 ◽  
Vol 220-223 ◽  
pp. 300-317 ◽  
Author(s):  
P.L. Dharmapriya ◽  
Sanjeeva P.K. Malaviarachchi ◽  
Andrea Galli ◽  
Ben-Xun Su ◽  
N.D. Subasinghe ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Ultrahigh Temperature

scholarly journals Crustal structure of Sri Lanka derived from joint inversion of surface wave dispersion and receiver functions using a Bayesian approach

2020 ◽  
Author(s):  
Jennifer Dreiling ◽  
Frederik Tilmann ◽  
Xiaohui Yuan ◽  
Christian Haberland ◽  
S.W. Mahinda Seneviratne
Keyword(s):  
Sri Lanka ◽  
Bayesian Approach ◽  
Crustal Structure ◽  
Joint Inversion ◽  
Receiver Functions ◽  
Silica Content ◽  
Low Velocity ◽  
Surface Wave Dispersion ◽  
Central Highland ◽  
Moho Depths

<p>We study the crustal structure of Sri Lanka by analyzing data from a temporary seismic network deployed in 2016-2017 to shed light on the amalgamation process from the geophysical perspective. Rayleigh wave phase dispersion from ambient noise cross-correlation and receiver functions were jointly inverted using a transdimensional Bayesian approach.</p><p>The Moho depths range between 30 and 40 km, with the thickest crust (38-40 km) beneath the central Highland Complex (HC). The thinnest crust (30-35 km) is found along the west coast, which experienced crustal thinning associated with the formation of the Mannar Basin. Vp/Vs ratios lie within a range of 1.60-1.82 and predominantly favor a felsic composition with intermediate-to-high silica content of the rocks.</p><p>A major intra-crustal (18-27 km), slightly westward dipping (~4.3°) interface with high Vs (~4 km/s) underneath is prominent in the central HC, continuing in the eastern Vijayan Complex (VC). The dipping discontinuity and a low velocity zone in the central Highlands can be related to the HC/VC contact zone and is in agreement with a well-established amalgamation hypothesis of a stepwise collision of the arc fragments, including deep crustal thrusting processes and a transpressional regime along the suture between the HC and VC.</p>

Infiltration Rates of Rainwaters in Sri Lanka Measured by Using Tritium Tracer

1982 ◽  
Vol 13 (1) ◽  
pp. 13-26 ◽  
Author(s):  
J. K. Dharmasiri ◽  
K. G. Dharmawardena ◽  
M. W. P. Wijesinghe ◽  
P. Thiranagama ◽  
I. D. T. De Mel ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Soil Cover ◽  
Surface Soil ◽  
Infiltration Rate ◽  
Moisture Movement ◽  
Depth Profiles ◽  
Infiltration Rates ◽  
Central Highland ◽  
Piston Flow ◽  
Very High

Tritium tracer, injected below the surface soil, is used to follow the movement of soil moisture in the unsaturated zone at several geo-hydrologically different sites in Sri Lanka. Depth profiles of tritium activity and moisture contents have been measured after rainfall. For two well-established aquifers, Vanathavillu and Mannar, the recharge to groundwater is close to 30% of the rainfall. Infiltration is much higher. The moisture movement is apparently like piston flow. In the central highland regions, where the surface cover is composed of an overburden of fractured rocks overlain by a few metres of soil cover, the infiltration rate is very high.

Abstract #604: Detection of Cardiovascular Risk Factors by Anthropometric Measures in Adults Living in an Urban Setting in Sri Lanka

2015 ◽  
Vol 21 ◽  
pp. 114-115
Author(s):  
Kavinga Gunawardane ◽  
Noel Somasundaram ◽  
Neil Thalagala ◽  
Pubudu Chulasiri ◽  
Sudath Fernando
Keyword(s):  
Risk Factors ◽  
Cardiovascular Risk ◽  
Sri Lanka ◽  
Cardiovascular Risk Factors ◽  
Urban Setting ◽  
Anthropometric Measures

Prevalence of Suicidal Ideation in Sri Lanka

Crisis ◽  
2010 ◽  
Vol 31 (1) ◽  
pp. 30-35 ◽  
Author(s):  
Sudath Samaraweera ◽  
Athula Sumathipala ◽  
Sisira Siribaddana ◽  
S. Sivayogan ◽  
Dinesh Bhugra
Keyword(s):  
Suicidal Ideation ◽  
Sri Lanka ◽  
General Population ◽  
Suicide Attempts ◽  
National Average ◽  
The West ◽  
Suicide Methods ◽  
Suicide Rates ◽  
Completed Suicide ◽  
The World

Background: Suicidal ideation can often lead to suicide attempts and completed suicide. Studies have shown that Sri Lanka has one of the highest rates of suicide in the world but so far no studies have looked at prevalence of suicidal ideation in a general population in Sri Lanka. Aims: We wanted to determine the prevalence of suicidal ideation by randomly selecting six Divisional Secretariats (Dss) out of 17 in one district. This district is known to have higher than national average rates of suicide. Methods: 808 participants were interviewed using Sinhala versions of GHQ-30 and Beck’s Scale for Suicidal Ideation. Of these, 387 (48%) were males, and 421 (52%) were female. Results: On Beck’s Scale for Suicidal Ideation, 29 individuals (4%) had active suicidal ideation and 23 (3%) had passive suicidal ideation. The active suicidal ideators were young, physically ill and had higher levels of helplessness and hopelessness. Conclusions: The prevalence of suicidal ideation in Sri Lanka is lower than reported from the West and yet suicide rates are higher. Further work must explore cultural and religious factors.

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