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RICHARD G. HEERDEGEN 《New Zealand geographer》1967,23(1):34-49
The cry for land in New Zealand in 1890 was no mere urban sentimentalism. It was no mere factitious outcome of the preaching of theorists … But in the main it was a genuine hunger for land. 相似文献
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A flexural model for the Paradox Basin: implications for the tectonics of the Ancestral Rocky Mountains 总被引：1，自引：0，他引：1
D. L. Barbeau 《Basin Research》2003,15(1):97-115
The Paradox Basin is a large (190 km × 265 km) asymmetric basin that developed along the southwestern flank of the basement‐involved Uncompahgre uplift in Utah and Colorado, USA during the Pennsylvanian–Permian Ancestral Rocky Mountain (ARM) orogenic event. Previously interpreted as a pull‐apart basin, the Paradox Basin more closely resembles intraforeland flexural basins such as those that developed between the basement‐cored uplifts of the Late Cretaceous–Eocene Laramide orogeny in the western interior USA. The shape, subsidence history, facies architecture, and structural relationships of the Uncompahgre–Paradox system are exemplary of typical ‘immobile’ foreland basin systems. Along the southwest‐vergent Uncompahgre thrust, ～5 km of coarse‐grained syntectonic Desmoinesian–Wolfcampian (mid‐Pennsylvanian to early Permian; ～310–260 Ma) sediments were shed from the Uncompahgre uplift by alluvial fans and reworked by aeolian‐modified fluvial megafan deposystems in the proximal Paradox Basin. The coeval rise of an uplift‐parallel barrier ～200 km southwest of the Uncompahgre front restricted reflux from the open ocean south and west of the basin, and promoted deposition of thick evaporite‐shale and biohermal carbonate facies in the medial and distal submarine parts of the basin, respectively. Nearshore carbonate shoal and terrestrial siliciclastic deposystems overtopped the basin during the late stages of subsidence during the Missourian through Wolfcampian (～300–260 Ma) as sediment flux outpaced the rate of generation of accommodation space. Reconstruction of an end‐Permian two‐dimensional basin profile from seismic, borehole, and outcrop data depicts the relationship of these deposystems to the differential accommodation space generated by Pennsylvanian–Permian subsidence, highlighting the similarities between the Paradox basin‐fill and that of other ancient and modern foreland basins. Flexural modeling of the restored basin profile indicates that the Paradox Basin can be described by flexural loading of a fully broken continental crust by a model Uncompahgre uplift and accompanying synorogenic sediments. Other thrust‐bounded basins of the ARM have similar basin profiles and facies architectures to those of the Paradox Basin, suggesting that many ARM basins may share a flexural geodynamic mechanism. Therefore, plate tectonic models that attempt to explain the development of ARM uplifts need to incorporate a mechanism for the widespread generation of flexural basins. 相似文献
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《The Journal of geography》2012,111(4):166-170
Abstract This article deals with the topic of birds as a teaching tool for geography. Areas of examination for using birds as a motivating or teaching tool are discussed. A variety of activities are notes, and suggestions for class resources including bird guides, bird calls, international resources, and human resources, are provided. 相似文献
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Daniel J. Leggett Anthony Jones 《International journal of geographical information science》2013,27(1):103-116
The spatio‐temporal relationship between unusual sightings of dead birds and human West Nile virus infections has been observed in many studies and has been proposed as an indicator of an intense amplification cycle between birds and mosquitoes. However, to date, no single study has provided quantitative evidence that the amplification cycle occurs at the local level and that it operates within certain temporal parameters. Here, we use a novel geostatistical and spatial analytic methodology and present the first evidence that the localized unusual space–time correspondence of dead birds models the amplification cycle and that this cycle peaks 15–16 days prior to human onset of West Nile virus infections. During the process of establishing this relationship, we extend the traditional Knox space–time interaction measure to overcome pair‐dependency limitations and use a novel implementation of the kappa non‐chance agreement measure to identify the temporal characteristics of the association of bird deaths to human West Nile infections. 相似文献
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作为与国际接轨最早的行业,我国国有饭店的整体经营管理水平有了很大的提高,但与合资饭店相比,仍有很大差距.本文从分析国有饭店实行战略性经营创新的原因入手,探讨了国有饭店实施战略性经营创新的策略,以期提高国有饭店的市场竞争力. 相似文献
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《The Journal of geography》2012,111(1):20-26
Abstract Islam is an important topic in human and regional geography instruction, and major textbooks include maps showing Islam's core and rapid expansion diffusion, along with the number of pilgrims to Mecca from different countries. Determining the qibla, the sacred direction for daily prayer, and the distance to Mecca are additional topics that link human geography, Islamic mathematical geography, and modern geographic information science. Recently discovered Persian instruments used a retro-azimuthal map projection devised by medieval Muslim mathematicians to compute the qibla and distance to Mecca from anywhere within the seventeenth century realm of Islam. Modern global maps that allow the qibla and distance to Mecca to be determined from all populated areas on earth are added to the Persian instruments. 相似文献
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A Physical Model for the Creation of the Lithosphere 总被引：1，自引：0，他引：1
Douglas W. Oldenburg 《Geophysical Journal International》1975,43(2):425-451
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On the Polar-Wander Path for Australia during the Cenozoic 总被引：1，自引：0，他引：1
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Ole H. Hald 《Geophysical Journal International》1980,62(1):41-48
Summary. It is shown that if Adams—Williamson's equation is used in the lower mantle and if the mass of the core and the density at the core—mantle boundary are given then the density, the rigidity and the incompressibility are uniquely determined throughout the mantle and in the crust by the velocities of the P - and S -waves and by one torsional spectrum. The velocity of the S -waves in the upper mantle and in the crust can be replaced by an additional torsional spectrum. 相似文献
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金黎君 《亚热带资源与环境学报》2005,20(4):43-45
作为与国际接轨最早的行业,我国国有饭店的整体经营管理水平有了很大的提高,但与合资饭店相比,仍有很大差距.本文从分析国有饭店实行战略性经营创新的原因入手,探讨了国有饭店实施战略性经营创新的策略,以期提高国有饭店的市场竞争力. 相似文献
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