江苏海州湾海区表层沉积物的孢粉研究

对江苏海州湾近岸海区的表层沉积物进行孢粉分析，总结该研究区的孢粉分布规律及成因。笔者认为该区的松花粉主要来自西北部胶东半岛；落叶阔叶乔木花粉来源于连云港市云台山；草本植物花粉与陆缘植被相应，以盐生的蒿、藜科花粉占优势，表明花粉沉积与当地及周边地区植被密切相关。蕨类孢子是从陆地由水流携带搬运而来，百分含量的高低可能是受补偿率的影响。     

球面三角计算定向取心结构面产状方法

根据定向取心数据计算中所确定的在岩心正截面上，水平截面中椭圆高点的投影沿反时针方向到结构面上椭圆高点的投影间的夹角的值及变化情况和结构面倾角，倾向的定义，通过球面三角简化计算过程来正确确定结构面的空间状态参数，结构面的倾角，倾向和走向。     

小秦岭裂隙式金形成机理初探

本交通过小秦岭一些与金伴生（或共生）矿物（石英、方铅矿和黄铁矿）对金的吸附性实验，探讨了裂隙式金的富集机理。     

简单可靠的LE—90型光电报警器

本文对现在台站使用的测震仪报警器系统在实践中常遇到的问题,如地震发生时,仪器不能及时报警等情况,提出了简单可靠的解决方法。     

联防抗灾夺丰收

1975年,湖南省 浏阳、醴陵和江西省修水、宜春、同古、上高、高安、万载等邻近气象台站,在当地党委一元化领导下,开展联防协作,实行群测、群报、群防,提高了对灾害性天气的监视能力和预报准确率。据不完全统计,参加联防协作的台站,1975年互通情报、预报127份,为农业抗灾夺丰收做出了贡献。 例如5月18日,万载县高村水     

庐枞地区安粗岩系

Volcanic rocks discussed here are distributed in the Lujizng-Zongyang region, Anhui province, covering an area of about 100 km^2, where a set of potash-rich intermediate series is developed which is particularly referred to as “Latitic Series”. The characters of the latitic series are as follows: (1) It was formed during middle Yenshanian (108--132 m.y.) ; (2) Spatially, it occurs frequently on the continental side of closing slab boundary stretching along the deep rift zone; (3) It is mainly composed of latite, trashybasalt and trachyte; (4) It contains sanidine coexisting with augite, plagioclase (labradonite, andesine and oligoclase) and magnetite, and clinopyroxene, formed under high pressure conditions, as well as pseudoleucite with no orthopyroxene and quartz; (5) The chemical composition is characterized by high alkalis, especially potasinm,with the ratio of K2O/Na2O≥1 and high alnminium but low titanium. The formation of latitis magma could be related with the slab movement. It has been shown that volcanic activities during middle Yenshanian were rather weak in intensity and small in scale as compared with those during late Yenshanian. The rather slow movement of Pacific slab during middle Yenshanian could not provide sufficient water and rubbing heat energy to the slab boundary, and therefore, partial melting could proceed only at the upper mantle depth (100-200km). It is believed that the partial melting of phlogopitelberzolite in some local regions of the continental mantle along the dosing slab boundary was responsible for the formation of potash- and aluminium-rich latitic magma,